Most seconds don't show any irregularity at all, even on close inspection. Some have a small fill here or there.
One time I was at my local independent pipe shop and wanted to try some Granger, which the owner gladly let
me sample. The pipe I had on me happened to be a Savenelli second straight billiard that I'd bought as an
unfinished pipe and that had turned a golden brown. I thought it was about as anonymous a pipe as could be.
So I enjoyed my Granger sample quite a bit, and went on my way. Another time months later I stopped around to
buy a tin of maybe Royal Yacht and didn't have time to smoke. But the pipe shop owner remembered my pipe
from before, and referred to it as "unpretentious," but it was clear he meant that in a good way, a very good way.
After more than 30 years, I feel pretty good about the pipe myself, and it does have a few small fills.