I don't know how much interest there is in Xpac on the forum for making backpacks - especially, as a cheaper alternative to Dynema X. However, I am making a quick purchase of the Xpac material (seconds) at a severely reduced rate. Normally, Xpac is purchased at about $10.25 - $12.50/yard. Dynema is about $21-22/yard. I'm getting mine for $3.50/yard (depending on taxes) in black. My understanding is if I order 10 yards, I don't have a cutting fee, so my plan is to order 10 yards. 54" roll
The fabric is the VX07 which is the lightest it comes in and is listed as an Expedition Series from the company. Some details (70D double-ripstop nylon with a .25 mil PET film and a 50 denier plyester taffeta backing. It is DWR to the extreme. It uses spinnaker sailcloth technology.
If there is anyone interested let me know ASAP. If you have my phone number, you can call me later tonight or email me and I'll email you early tomorrow morning (6:45).
As much as I am into UL, there is a balance of security to UL that a more durable fabric gives me.