A simulrec is a great idea. We used them all the time at the BBC World Service. Two people talk to each other via Skype or the phone. While talking via Skype/phone, both of you also record the conversation into a high-quality microphone. So, you chat through the phone/Skype, etc.; however, both of you also record into good mics at the same time. Once the interview is over, one of you sends the other person the high-quality audio WAV/AIFF file. The other person edits both quality files together. Now, you have an interview where both people have high-quality audio, and it's not crappy audio recorded through a PC microphone.
is an ex BBC, radio studio manager, and the ex manager of Radio Kings, the hospital radio station for King's College Hospital. He's presented on three FM stations and waaay too many community stations.