I have more than once pinched a hole in the tube using a lever to finish the job, even being careful.

EDIT: I do use lovely stainless steel levers.

I find it reasonaby easy (for gatorskins anyway) to do it hands-only with my Salsa rims. The Mavic Open Sport - Gator combo is a chore.

Anyway, done and done. Getting back to the high pressure tires is all part of an experiment to double-duty my commuter as my training and group ride bike until I buy a 2nd bike for racing. I'm also changing my morning commute to a much longer one in an attempt to double my weekly mileage. More on all that in a separate thread...