I would not recommend transfer direct from the cards to FCP.
I have never seen the glitches you mention….up to about
400 card downloads…I have copied files from P2 to
Powerbook in moving cars, boats & planes….
I have used AC/DC power, copied to FAT32, MAC formatted,
DVD-R, Flash memory cards etc….
If I do run into these glitches I will be sure
to let you know.