It's nice to have long arms. I get the extra power without a different hold. I'm a minimalist when it comes to slings so no extended forks or wrist braces. Isn't extra draw especially beneficial to light ammo?
At one point in time I thought Joerg was going to do tests on various bands and also show the results of different draw lenghts. I never saw the results so I don't know if he ever did the tests.
Seems like I seen something on youtube (maybe gamekeeper John) where they measured same draw weight for straight then tapered bands. Same anchor point etc. tapered band are just plain faster with most ammo.