Only for any single payment, apart from that they are separated, this allows use of safecoin by hijacking the private key for a short time. They would be significantly separate though. So you have a SAFE SQRL keypair in your SAFE account for browsing/logging in and can become a SAFE account of that key for short periods, but that is temporary to xfer safecoin for a site (single site) if needed.
I am sure this will radically simplify and become clear as we proceed with the RFC.