Some good bankers believe enough top/bottom spin can be transferred to an OB to produce the same effects, but I don't think so.
I don't think it's large, certainly not comparable to what can be done with the CB for a kick - but I've noticed it many times, and even posted about it (5 years ago): http://forums.azbilliards.com/showthread.php?t=210628
pj
chgo
Using bottom, no probably not but using inside will absolutely shorten the bank as much if not more than hitting it hard.