I am concerned about velour lines AIOs wicking. With DD's I'm pretty sure you can get the soaker in OV and then do the lining in the AIO with suedecloth or micro that really doesn't touch the baby's sensitive areas.
Just wanted to point out that all my AIOs are lined in cotton (OV) and none of them wick.
They are absorbent enough, with a hidden layer of hemp in the body, then a layer of OV, and on the soaker pad hemp layers and OV layers.... so since my son isn't a mega-heavy-wetter, it's plenty absorbent and that's probably why it wouldn't ever wick (solid PUL outer). If the thing was totally saturated and I left it on him too long, I guess it could wick.