thanks for the reply! i thought so too. will this setup work?
New iMac with Thunderbolt, downgraded to Snow Leopard and using FCP 6 or 7 –> Blackmagic Intensity shuttle thunderbolt–> sony Betacam (UVW1800) capture and playback ( i have a separate USB to rs-422 for control)
also, what are the differences between the Intensity shuttle and extreme aside from the breakout cable?