Prosites - Stripe payments on multiple sites on the same account

I have a question about Stripe payments with ProSites. Say for example I have a client who signs up for a blog and pays with Stripe, then if the client wishes to sign up for a second site - does he then have to set up another stripe account, and enter his card details again etc, or, are his card details recalled from his original set up and he doesn't ave to enter them again?

If it's the first scenario, I think this need looking into - I did actually put something similar down as a feature request - that is, separating up the user account section so they can view and edit their payment details - this would be particularly useful for stripe payments.