Yep, the Conti Ultra Sport 2 is a tight bugger. I need a Kool Stop bead jack to horse it on. Removing it isn't too bad. Installing and removing get easier with repeated use. By my third flat repair it was about like any other tire. I suspect some excess rubber gets scrubbed off over the bead, making it a bit easier to get over the rim.

Schwalbe One V-Guards were pretty tight at first but after a couple of flat repairs I could remove 'em with regular plastic levers and usually needed only my fingers to put 'em back on.

The only Vittoria tires I've tried are the entry level Zaffiros. They were easy to install and remove, neither too tight nor loose. Not great tires though. I planned to use them for the indoor trainer, but got lazy and just used the Conti Ultra Sport 2. Turns out the US2 have been fine on the trainer, no excessive wear. Saves time when switching between indoor and outdoor rides.