I never did stay-dry liners... I want my kiddos to know they are wet. I don't have a problem changing often. I don't see why the velour
wouldn't work, though. Suede cloth is supposed to do the same, and I was quite shocked at the weird plasticy feel of it (you know cause everyone loves it so much). Anyway. Polyester is non-absorbant, velour is pretty soft. Couldn't hurt a bit to try it. What's the worst that could happen? It would feel wet!
Wool blends work well- as long as it's not blended with something absorbant like cotton

I shoot for at least 75-80% wool. Though 100% acrylic sweaters also work- they just get stinky fast and you have to wash them often (you might get it to last through a day)- you don't lanolise acrylic.
50/50 poly cotton sheets work very well. Stays smooth and doesn't pill. The layers hold up well for pocket diapers. Pillowcases are nice, too for the same reason. Oh, and they seem to stay cooler than 100% cotton in hot, humid, southern summer weather.
100% cotton wovens are very nice, too of course. I find them easier to sew than knits.
--Don't forget to check the sewing notions! I found a big roll of snap tape for 10cents one time! Sometimes you can find velcro and elastic, too.