I believe the intersango wallet allows this too, if i understand what you asked correctly
No.
For context, this question is asking what (e-)wallets don't store your funds in a single pool of funds. This is important because many gambling sites, so they can verifiably prove that they aren't stealing money, send winnings to the address that the funds were sent from. On many e-wallets, the funds could be sent from practically any address that the site has. Whereas, with most normal wallets, you directly control all of the addresses that the funds could come from, so it doesn't really matter