Any clockport hardware driver would have to be modified to detect and use the hardware connected to the Kickflash. The A1200 clockport base address is 0x00d80001, which is what most drivers use.
I can't find docs for the Kickflash clockport, but it's most likely at or near ConfigDev->cb_BoardAddr + [size of Kickflash mem]. A quick email to Jens should get you a list of clockport hardware drivers that are known to work with the Kickflash.
ADDITIONAL: Speaking of Kickstart patches, one that routes keyboard I/O to the Catweasel MK3/MK4 would be cool (so you don't need a separate "driver"--but I guess they're pretty much the same thing, with the same installation overhead).
Trev
