Now seeing all the struggle the LBS people had getting it on -- they have thumbs of steel and they needed a tool to get it on, and even that was a struggle -- I'm not convinced I'll ever get it off to fix any flats. Hopefully I don't get many!
Oh you'll probably get it off with levers just fine. It'll be the getting it back on that will be a challenge. The good news is that the longer the tires are mounted, the easier it is to get them off and on again.