HVX-200 P2 files to both FCP and AVID

Have a project that I'd like to shoot with the HVX200 on P2 cards (downloading to MacBook on set). Will probably shoot approx 20 hours total.

The rub: I need to deliver footage to BOTH my Mac HIGH DEF FCP5 edit bay AND to my client who will need to import the footage into a STANDARD DEF PC-based Avid system.

I intend to cut my footage DVCPROHD throughout offline and then output to HDCAM and also downconvert to letterboxed SD.

So my question is: Is there a (simple/user-friendly) way to shoot on this camera and deliver to BOTH needs -- Mac-based FCP HD and PC-based Avid SD?

I pretty much have the FCP portion figured out (via DR Group, thankyouverymuch), but the Avid part is a mystery and my client will K-I-L-L me if there's an issue with the firewire drives I send them with raw footage/files.

Help? Much appreciated...