Are veneers "tried on" while numb?

I'm having my top veneers replaced (6 veneers, 2 crowns) and am currently in temps. Is anesthetic used when trying on the real ones? Novocaine used on my front teeth make my lips and face swell a lot, and I'm concerned that I won't be able to tell if the veneers feel and fit correctly (especially my bite) before giving the ok to have them permanently cemented. Related question: Can something be used other than Novocaine? (not nitrous oxide.) Thanks!