Eh, I don't think that's really what he was describing. Cryptsy isn't really multiple client wallets, I'm under the impression that they have multiple wallets and that your account balance is just recorded in a database somewhere. That is to say that they don't generate an individual private key for each kind of coin that you store there. Furthermore they even make mention not to use their service as a wallet on the site itself.

Anyway, we are starting to get really off topic here.