Well, I've spent the evening tuning up and playing one, so here's my thoughts.
So far I've only tried this on my 6.5" Black Magic fitted with single flange hoops and a clear Ambassador snare side. As a point of reference I've used pretty much every type of vintage/calfskin-style drumheads; Fiberskyn, Renaissance, Skyntone, Strata, and Modern Vintage.
Appearance: To my eye very similar to Fiberskyn. It looks like an animal/membrane-type layer bonded to a clear film head. Time will tell if there are de-lamination issues as these heads get played out.
Feel: Again, similar to a Fiberskyn with a smooth texture that reminds me of wrinkled wax paper. With the base film being 7-mil the textured "skin" layer brings the overall thickness up to something like a typical 10-mil head, but stiffer.
Sound: Much like other calfskin-style heads there is a big boost in the midrange and a fairly prominent high end too. On an open sounding brass snare there are a lot of mids and highs, but the overall response is very dry. That dryness gives a lot of sticking clarity and the highs, while strong, don't seem to sustain much. It immediately gave my snare a very dry rudimental/orchestral/military type of sound.
User experience: Because the head is stiffer than a typical one it has a particular feel under the sticks that (once again) reminds me of a Fiberskyn. The Level 360 collar is used on these heads, so the head was really quick to tune up and responded easily to several pitch levels. The general sound quality was consistent in all of the tunings I tried.