I can confirm that if you own ps3 edition (I have CE) you cannot log in to any PC and play without buying a PC copy and registering that PC cd key to your SE account. I tried this and it won't let me play.

This actually raises another question for me. I'm gonna buy a digital PC download when they open it back up. Since I have a CE already registered to me on ps3, can I just get a standard PC edition and be alright? Or do I need CE for PC also to retain that status when I play on PC (and have access to those bonus items)?