I, like John above, have the Klymit Static V sleeping pad and wanted to try this out underneath. Although I am quite bitter that Lawson did not choose my suggested name for the pad, I will get over it. :P
My first thoughts were, well... obvious:
-It is light.
-It doesn't seem extremely durable (but I baby my gear so it should last).
-It was surprisingly comfortable by itself (not so obvious, I suppose).
After my Klymit pad was applied:
-It has nice natural grip, so the pad doesn't slide.
-It added a new layer of comfort to the Klymit.
For use as a frame in a frame-less pack:
-This worked perfect inside my 2012 GG Murmur in place of the sit pad and I suspect it should work just fine in others. It is slightly more firm than other 1/8" pads I have seen (which is a good thing IMO).
Inside a hammock (Double-layer):
-This idea was a no brainer for me and probably the single-most applicable reason that I purchased this pad. I'm mostly a hammock camper but when my girl comes with we set up the SMD Lunar Duo. Anyway, the pad fit great inside my WBBB 1.1DL and was not uncomfortable. I suspect it should keep me warm down to 40-50 range with my Top Quilt (Rated to 20).
Hope this helps and I'll update more as I actually use this out in the field.