adventurer, photographer, filmmaker.
Preferences are going to differ, just like people's preferences for hiking and camping equipment. Some people can't live without certain luxury items, and others will make sacrifices to shed every last conceivable ounce. I'm generally in the latter group; I try not to have a total equipment (camera, lenses, tripod, slider, batteries, etc) weight over 25lbs. That usually means my total pack weight (with tent, sleeping bag, food, clothes, etc) is usually under 50lbs. For me and the kind of shooting I do, your FS7/zacuto rig would be a total dog...I'd probably try to bury it under a tree somewhere after a few miles. But if you need the features, you need the features. Best advice is to get out and hike with it and see if you can do what you need to do.
Hey Chris, I was actually really impressed with the "free hand" movement, given how cheap everything is. The 80/20 parts are not exactly made for precision movement but the motion is actually pretty nice - I would say there's no stuttering or stoppage on 9 out of 10 slides. I actually prefer it to carriages that are "uncontrollably" smooth; I find that a little bit of friction actually helps maintain a constant velocity. So...short answer: it's very good, considering it costs less than $50 to make.