HOW WRONG YOU ARE!!!!
For the record, I have a mimistack V3 2TB hooked to my 27 inch iMac by way of firewire 800...I also love the speed of firewire 800 as s its way faster than my ministack v2 400GB.
I did "YOUR" daisy change with the V3 hooked to the iMac and the Canon ZR500 connecter to the firewire 800 on the v3...and guess what? iMovie did not take the ZR500 camera...also for the record, the ZR500 works just fine connected to the iMac with out the daisy change.