Executive Summary: I really like it!
First off, unlike 3Dprintingsystems.com's "Rubber-Like #1", prints made with it are not soft and rubbery at all (although it is soft and rubbery when it comes off the spool). It's got slightly more "give" than ABS, but with a wall thickness of 1.8mm in my test part it's quite rigid. Orbi-tech's video show objects being squished and so forth so I guess there's a point in thickness where it does become quite flexible. They state that it has a hardness of 65 Shore D, but it feels a lot harder than that to me. Obviously you can't really measure that with a printed part since it will depend on fill density, inter-layer adhesion, etc.
I printed the first layers at normal ABS temp, then dropped it with the 11-ohm Octave switch. Fan duct closed. 0.25mm layer height because the part doesn't need detail or smooth curves and I'm impatient
The filament fed perfectly on a stock Afinia, no issues. Adhesion to perfboard is excellent. Support came off really easily, more so, in fact than ABS typically. Clarity is similar to transparent ABS's I've tried.
The part feels very strong. It'd be interesting to compare it quantitatively with nylon, but I'm betting it's close. The print, however, is much cleaner than anything I've done with nylon, and cleaner than a lot of ABS prints as well. No stringing or popping of any kind. Dimensional accuracy appears to be excellent. Orbi-tech claims that moisture absorption is 30% of that of ABS.