Who's to say what is technically "allowed" and what isn't? I personally opened up nine new bank accounts this week with my bank (surprised they allowed that, but I've been banking with them since I was six, so I think they trusted me). I got debit cards with all of them and started three of each personal, premier, and business. I also maxed out the allotted number of attached email addresses allowed, as I found myself with several. Oh, and I got the debit card that comes with the PayPal account. So now I'm set... they're all verified and everything and the phone numbers are verified and linked, as are the addresses.
Now I just need eight more wallets.