Firewire cameras vs. PTZ

Pardon, maybe I have overlooked something, but do you have on mind any example of PTZ camera with FireWire interface?
There are many standard, industrial cameras both for FW and USB2, which can be used with v4l with no (or almost no) modifications, but I envision an intensive use of PTZ capabilities for object tracking etc. Should we consider using PTZ devices compatible with Aria or, maybe, adapting other products? The cameras I have used have standard C/CS lens mount and there should be lots of motozooms fitting them.
BTW., the motorized lens (not only zoom, but also focus) is an essential part of the image acquisition system, especially when considering the active vision issues.

Marek Wnuk,
WRUT