Wayne, Mark, Jeff, thanks for your quick responses to this. yes, it is DV, and to be honest will probably only be DV for a while. My next question was going to be about multicam editing but Jeff’s already answered that one.
I just have to get another license now for the iMac as obviously it won’t let you edit with the same serial number on a network!
I was a little worried that the switch I bought was not up to the task long term – it’s a Netgear GS608 (8 port Gigabit switch). Seems fine though at the minute.