It has its advantages and disadvantages. It's a bit noisy, but very lightweight. The main problem is its bulk. It won't fit into the pad holder on my zPacks pack, so I have to strap it to the outside. Cutting it to size is also a bit problematic. If you miss the mark, you'll deflate a whole row or maybe the whole danged hunk. I didn't want to find out, given the smallish sample I had to work with. It's easy to tape together the hunks with clear mailing tape, which sticks them together very well.
I'm not sure its any warmer than foam. It certainly is a more comfortable buffer between the my body and the hard, hard ground, but a layer of leaves works just as well -- if they are available.
I'll post more extensive findings as soon as I give it a second sleep, I hope this weekend.