Based on PJ's recommendation, and the fact that I can't get a roll of black Vinyl from B&H without crazy shipping charges, I ordered two pieces of the black material she used in her "On Black" thread.
First impressions, what a PITA!
I got it out of the box and the same backing that keeps it from wrinkling keeps the packing and shipping wrinkles in it pretty bad.
No rod-pocket to hang it on a support. Not a huge issue as I'm putting up a 6-roll ceiling mounted roller system that has cores available for backdrops just like this.
In a house with four dogs, it was COVERED in fur before I even got to the testing!
All that said, I think I'm going to really like it.
I've also discovered that I like the look of Plexi on WHITE better than I like tile board. Plexi is definitely more versatile than tile board in terms of color. but it's also quite a bit more expensive.