Hi Martin -
The only comparison testing out there thus far is an extensive review written by mechman over at HT Shack, where he compares it to his gray laminate screen:
One notable is that the closeup pic was not color corrected like his screenshots were. The material is NOT gray looking, but is a bright neutral white.
I recommend checking out a sample first. At 10 feet, those with acute vision can make out the texture if they're looking for it. It may not be bothersome - several are using it up to the minimum 8 feet - but it'd be safer to confirm that the texture is acceptable to you in your HT. Just email or PM me for a letter-size sample, or if you need larger they are available.
Hanging the screen in front of a flat panel or other type of TV is a common application for this screen. Being retractable and AT is a great solution for dual-use areas like this. You'll need to have the black backing layer to make sure your Kuro doesn't reflect back through.
I cannot recommend enough the benefit of $20 in darker paint for your ceiling (higher priority - you'll get a surprising amount of splash up there with nearly any screen) and your walls. Going ANY shade darker will help. White surfaces can set your projector's contrast back 5 years. At least you have good light control, so you won't have to resort to the color shifting and uniformity problems from higher gain screens. Mech's review does show some ambient light shots in comparison to his gray, so you can get a decent idea what it'll look like.
Mike's right on that you CAN do up to around 115" in a 2.35 format with the VP11S1, depending on how bright it is in real world conditions vs. your personal preferences. Some lean towards wanting that head-turning immersive feeling, while going a little smaller will help boost your image dynamics and smooth out motion. If I had the VP11S1 (and white ceiling/walls), I'd probably go towards a couple sizes smaller. At 10' and 115" wide, you'd be at a head-turning 51.2 degrees. I only recommend that huge to those who have lived with viewing angles that large and know they want (or NEED) more.
I've only sold the standard RF motors into Europe (220v), but I'm sure I can get the Somfy's in 220v. I'd need to call my rep, but it shouldn't be an issue.