Alexander yes I have three different clamps for my Bitzenberger straight, right helical, and left helical but you can still put an offset with your clamp on any of them. Terry and Skates 2 are referring to me inadvertently using the term straight in place of offset, but most jigs impart some sort of offset, although I know with the Bitzenberger you can set the jig up without any offset and use a straight clamp.
To rephrase the question so there is no misunderstanding has anyone used a Arizona Ez-Fletch True Helical fletching tool and noticed a difference in flight or impact of their shafts when compared to other offset or helical shafts?
Thanks,
Roger