I used to have only a left helical clamp. So All my arrows would fletched that way.
Then I eventually got a right helical clamp and now all my arrows are fletched that way.
For the a time I had left and right wing feathers to use..so some of my arrows where right-wing and some where left-wing.
The only noticeable difference was that the left wing arrows would loosen their points and the right wing wouldn't.
They flew the same...and I have LW clamp for sale!
(Just thought of this note. If your jig will allow you to offset get a straight clamp and use up all your feathers. Just keep track of which arrows and feathers are RW and which are LW. I'm finding that I get plenty of rotation even with a straight clamp and a few degrees offset.)