Welcome to the Shack Ben!
Couple of things... I have way too much on the go to build a test rig for these right now. I could get to it but it wouldn't be for awhile. I'm working on a new screen frame design, doing work with using the PS3 as a media server, gearing up to build a HTPC from the ground up as an HTS tutorial... and somewhere in there will be building an arcade machine... Then there is still work and family!
2007 did not turn out anywhere near how I thought it would, bad year all around including the death of my sister, so things have been hectic and I am WAY behind schedule.
If nobody else wants a sheet, if you want to do a dual screen, then sure, you can have both sheets. The box they are both in is pretty big, so make sure you have the room to transport them. Also keep in mind you're restricted to a 98" diagonal 16:9 screen, so if you were looking for something bigger than that I can't help you out.
Only requirement is as stated... send the trimmed pieces to mech for color testing, and do a full photo journal and write up and post the results here.
I certainly don't mind if you post it elsewhere either, but let's try to post it here first, fair enough?
As far as a flip screen though, I'm not a big fan of unlimited step grays. I really don't think most people would see a difference between an N9 shade and an N8.5 shade of gray. N8, yes they will see a difference between the two, but when we start getting .5 and under our eyes have a hard time picking up the subtle differences. With that said, one sample sheet is around N9.25 and the other is around N8.5 (and a little warm, but Wilsonart said not bad). That's far enough apart that you should see some difference in performance with lights on, but I personally would go with the N9.25 and FG or Platinum if you really want the benefits of using the screen with lights on or ambient conditions. Still... free is free right?
Mainly we need this tested and I can't work it in right now. If they end up viable screen options, then we now have very simple and excellent performing one step non-painted screen options that go from N6.75, N7.75, N8, N8.5, N9.25 and one of the best white screens in DIY, Designer White.
Some people complained that the problem with laminates and what made paint better (beside the price) is that laminates basically came in White (DW) and an N8 shade range of gray (FG). If these check out, we'll have a laminate screen for any person's setting and tastes...
Well... not totally free
You have to do a presentation!