There are probably more reasonably experienced hewers in North America now, than there has been in the last 100 years. The Guild's project in Poland trained a bunch of (mostly) college students that worked on the project. The ones that I've met came off the project pretty psyched on hewing. I'd contact the Guild office and/or Handshouse Studios to try to get in touch with some of them.
I'd say that you probably also want to set some hewing standards, because you can get very different finishes from different approaches and axes.