I shift all the time in the drops with Campy brifters. Unless your hands are really small or you set it up really weird, you should have no problem.
In all but one aspect, I prefer Campy, and that's for me, sprinting in the drops, shifting is less error-prone with Ultegra. Everything else, I prefer Campy, including
Durability
Ergonomics of the brifters
Ability to open the brakes from the brifter while riding
Multiple up and downshifts
Ability to rebuild brifters
Crispness of the shifts is equivalent - at least to start
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Things now are more like they have been than they ever were before.