Guy McLoughlin has the god-tier answer on this thread, but I'm going to follow up.
I've used both totas and omnis for a number of years, and one of my favourite applications of the totas is to embrace the "mass cast" that they provide.
They kick off an ABSURD amount of heat (the Totas in particular) being that they are just about as close to a bare EMD bulb as you can get (+ reflector for a more efficient kick) and thus can not as easily be controlled as something with a more substantial housing. Cinefoil/black wrap will just melt if it gets too close, something I learned the hard way on one of my first uses. Thus, flags are one of the most useful, if not necessary additions to your kit if you want to unlock the full potential of the fixtures.
Now, to get back to that "mass cast", I use Totas to create a beautiful wash from ceilings, and if used properly, can create a massive "skylight" that I'll flag off from directly hitting the talent. The output they produce is fantastic for the size of the fixture, and make a great addition to my lighting kit that I can easily throw into other cases because they travel so well.
Riiiight up until any debris that falls into that Y-shaped connector just bounces back and forth as the operator is walking.
Not to mention accidentally hitting the thing on the corner of a table as I am trying to slip through a crowded space, or if someone else clips me.
I love the idea, but I'm apprehensive to trust my surroundings and my belt with my glass out in the open.
Upvoted for the first statement.
Part of the "drama" is that countries and governing bodies are still trying to figure out what drone piloting entails. There are a lot of safety issues that come from being disconnected from your tool, and one that can travel at a considerable speed, nonetheless. I, for one, am glad for /some/ of the red tape, because it helps weed out the users who "can't be bothered with it".
Speaking from the U.S. (where I recently finished being licensed by the FAA for UAV operations), there have been several changes in legislation even over the past year because of changing opinions, and "security" or "safety" concerns. The biggest that comes to mind is a total ban on UAVs in ALL national parks because of some idiots who crashed their Phantom into a geyser pool in Yellowstone. That will likely shift to be a bit more lenient in the future.
My favorite in-joke term with one of my local cabals of filmmakers is "Mel Gibson"
Mel Gibson was a dirtbag, ergo, a sand bag.
Also a Silk Salad. Silk, lettuce (green scrim), tomato (double red).
Part of this lies in what you consider a "real" film set... are you talking about a Hollywood studio set? A commercial set, with video village stuffed to the brim with agency reps?
Frankly, the answer to all these (and more) is the same. Oft repeated, but nonetheless true, networking is king in the Cinedustry. If you have filmmakers around you, ask them who the big people are in town. Then get in contact with them, invite them to coffee, ask if you can pick their brains.
The PA route is the "easiest" perhaps, as it has a low barrier to entry. However, that also means that they're occasionally a-dime-a-dozen. You'll likely work for free or very little to start (unless you find someone who will take you without vetting your set-iquette), but eventually, provided you've got the hustle, your name will get passed onto people higher and higher on the local chain. Eventually you'll find yourself nervously standing firewatch over a couple 5-ton grip trucks as a flood of producers ask you for another latte.
The video that Michael posted (Sean Bobbit's workshop) is great to keep in mind. Personally, I have a few different "workout preps" that I do during the time that I'm prepping. I'll usually figure out how much my camera platform will weigh and I'll base a small regiment around that number.
For instance, if I know I'm going to be wielding a RED Scarlet platform with all the bells, it's 20-ish pounds (20.34 is the kit I run with), plus whatever lens. So I'll do some running with 30 pounds on camera shoulder, ten on the other, just to get my body used to the difference in weight that I'll need to operate efficiently. Beyond that, it's just a lot of core things.
It always comes down to balance and being able to take the extra weight without contorting yourself like a circus performer (because that's a solid way to screw up your back...take it from experience.) Also, it's a good idea to find a physical therapist or a chiropractor who might be able to give you a couple more specifics for what might work for you.