You shouldn't need a vet to pinion them as babies. You just snip off the end of the wing while they're still only a couple days old. It's pretty common and really doesn't hurt them at all. They don't even bleed most of the time. The key here is a very sharp pair of scissors. If you don't want to you don't have to, but it's usually a good idea to keep them from spooking and flying off/getting lost. Pinioning is very different from wing clipping and those words aren't used interchangeabley. Wing clipping anything bigger than a goose is not easy and I'd never recommend it. It stresses them out badly and they can get hurt or hurt you. It is not inhumane to pinion them "taking away their ability to fly". It's responsible and protecting them and other birds. We see feral ones all the time at parks and on ponds that flew off and the owners could never recatch, which usually starve and die in the winter since they don't know to migrate.
Make sure no matter what you tame them and work hard to keep them friendly. A tame bird is so much easier and more enjoyable than a skittish one.