I wondered about a shifter-mounted clutch myself. If you used a motorcycle hydraulic, you could mount the lever at the top of the shifter with a nice chromed pull-cable activating the clutch master. The master could be stashed anywhere, as long as the cable could reach it.

The left knee isn't doing too good nowadays, and this might be a good option so I don't have to use a sissy automatic.

I would be REALLY cool when someone tries to drive your car, too. The confusion would be a sight!!!