I’m not an expert on camcorders or the hvx200, but I’m pretty sure that with a firewire you can go straight from the HVX200 to your laptop through an external or internal hard drive, and capture in FCP, no P2 cards needed. The hard drive does not have to be firestore or specially formatted. The panasonic hvx200 technical expert told me this and I have subsequently read about other people doing so on the dvxuser forum.
Was this one of the questions you were trying to ask?