Most DV-camara's have build-in harddisks/memory, so Firewire should be the way to go to take the raw material from the camerea. Will also be faster then a cardreader, although internal they do usually use a USB 2.0 connection, which is way slower then Firewire.
There are a few Sony's which can save to memorysticks though, I do not know what type Rob has.