Perhaps you could add support for 'C:' drive ? This the drive used with the WFT-E5 grip on 7D when a USB drive is connected to it.
There is a setting in the Canon menu to choose between CF, HD or both for saving shots but ML doesn't care about it and ignore C:
If there is support for the C: drive, file_man could be updated to let one copy/move files between CF and hard drive, mlv_rec span recording could be used to add a 15-20MB/s boost.
Ok will try it.
I did some benchmark previously with a modified mlv_rec where I substitued the reference to 'A' drive with a 'C' and got recording of about 16MB/s (only...) but I tried with a bare HD mounted on a sata-to-usb2 interface, perhaps it can achieve better throughput with another drive.
I'm curious about other WFT grips for 5D MkII, MkIII,... does somebody tried one ?