I got the velours in the mail today (yay!). Have swapped one ear piece and then had a listen to see what differences I noticed. I am very happy to report that sonically I found no difference, both sides felt very balanced! So no perceived change to SQ which is great news to anyone considering those.
The thing is, the velour pads feel
very similar to my Fischer Audio pads! Now my FA pads are not stock, I've performed the tissue mode on them which has already enhanced comfort a great deal. So it seems that at least for me tissue mod and velour pad come very close to each other in terms of comfort! (and are pretty much identical on sound)... Of course for $10 you might opt to go for the Velour pads anyway but if you live outside the US (velour shipped to Aus was $20) or are short on cash the tissue mode will work wonders on your FA-011!
Upon inspection it looks like the depth of the pads is similar which I think is the main thing at play here.
To other velour pads owners\experimentalists: did you remove the black thin foam material that covers the earpads (as it comes stock from FA)? I've left mine on for now, not sure if it makes a difference (so there is basically two foams between my ear and the plastic, one from the FA factory stuck to the plastic and one from the HifiMan pads).
If it matters, my FA-011 are rev 2 which was the first black revision after the original red one came out (what started this thread).
I can post some pics if anyone is interested in the comparison between tissue mod and velour pads.
PS the link to the tissue mode can be found at the bottom of the OP, but for those too lazy to go looking here it is:
http://www.youtube.com/watch?v=sUH63_lnTJo&feature=player_embedded