No, I haven't considered CCF, and I value my comfort too much to do so. I see what you guys are saying about the "drop" off an air pad from the torso to the legs. Hmm...maybe stuffing your pack with something to raise it?
As far as cutting down the Xlite goes, if the LARGE is 78", I could still cut off a significant amount and have enough room, since I'm only 5'7" tall. If I could save 3+ oz I would say it's worth it for me, since I've gone to great lengths to cut off fractions of an oz elsewhere. The main reason to cut down an Xlite would be to make a standard length Xlite with a wide shoulder--which I wish ThermaRest would make to begin with. I just don't understand how people bigger than me can be comfortable on a 19"-20" wide pad, esp. with the NeoAir baffle design.
Now someone just needs to invent an inflatable PACK! It could serve as a multi-use item:
1. a flotation device for crossing deep and swiftly moving rivers
2. to go underneath your legs, allowing you to carry a torso-length pad
3. to give the impression that your pack is full so that you can pass gear off to your hiking companions