As for the debarking. Some are, some are not. From folks I've talked with around here it's a matter of opinion. If I had to do it all over again, I'd still not strip them (ask me again in 15-20 years on my opinion). All are coated with the foundation sealer.
The notches. It's the get the stringers plum. The bottom stringer is treated 2X6, so it's 1 3/4" and the middle/top are real 2" width. Some are notched to make a nice smooth plum wall, other wise the walls would be crooked since the poles are not the same at the top/bottom. Oh, I plummed the poles best I could to the outside wall, and the ones where you drive thru, but it's still a log in a hole!
Still working to finish, between Christmas and nobody buying houses I haven't the extra dollars to finish the rest of the roof (3 deals feel or still waiting on the banks to okay loans for some hard working people).
Hopefully I'll get more siding up on Sunday. Big day Saturday showing a lot of homes.
More pics to come soon.