This LensProToGo video shows off the personality, the quirks and the lovable flaws of Lomo Squarefront Anamorphics.
One of the beauties of renting a variety of products is that you can be pretty honest about the benefits and drawbacks of everything in your stable, which is shown off brilliantly in this video by online rental house LensProToGo. The Lomo Square Front Anamorphic lenses have their drawbacks, and if you are going to rent them to folks, you might as well get all of their "personality" out front and center in your promos to be sure that anyone who makes the decision to use them knows what they are in for.
The video covers the basics of anamorphic shooting in general very well, and really digs into the reality of working with these lenses in particular: the breathing of the images, and the quirks of their physical design (hard to mount follow-focus, and backwards focus ring, etc.). The only thing missing is some discussion of the difference between front-element anamorphics and rear (or middle) element anamorphics.
With products like the Hawks, which are middle-element, or the Russian Photon Zoom, which is rear-element, you aren't guaranteed the famous streak-style lens flare that we associate with "anamorphic" looking images, and if they do appear they are more mild. The square-front Lomos are a front-element design, meaning the glass element that does the squeeze is in front. This particular lens design—which can easily be seen in the image above where the lens writing is being distorted by being behind a front anamorphot—gives particularly great streaky flares. The later round-front Lomos are middle-element, so if you want streaky flares, the square-fronts are a great, cost-effective tool to get there. I also personally find that the "anamorphosing" of the Lomos (both square and round front) leaves the image looking a bit smeared or stretched looking. With a digital finish you could theoretically correct for this, but it's part of the personality of the image you are paying for.