I had 21 pairs of billets to process in the late winter last year from a huge hickory that fell in a neighbors yard.  After a billet or two, I figured out it was going to take me half of forever to do them by hand, so I resorted to my band saw for help.  The bark on these hickory pieces was an inch thick, so working with care I was able to remove the biggest majority of the bark.  It saved me hours of work.  Once the bulk of the bark was removed, I finished them off with my draw knife and scrapers.  It worked well for me in that situation.