I think IBD is suitable for candidates with no finance ground but want to make a switch. GS is hard to get in but if you are at Wharton, CBS, Harvard, Stanford, you could get a good chance to get in. If not in NYC, you could be in HK. You could also go to UBS or something like that if the market is not that good.
I think people who did IBD before will not choose to get into IBD again after graduation.