I'm learning to jump my mountain bike.
I've noticed that when jumping, if I "death-grip" the handlebar, my hands can actually twist around the handlebar. This happens in both the ascending movement, and after impact when finishing the jump.
Such twisting feels sketchy so I'm inclined to avoid a death-grip.
But the alternative, namely placing the index fingers over the brake levers, while it gives me a better grip with no twisting, has the obvious danger of accidentally braking the bike as I land the jump. I don't deliberately brake the bike on landing, but it's easy to have that reflex.
So I was thinking, why not get a grip that is non-cylindrical? I've seen a few such models. They seem to be marketed as "ergonomic" grips.
An example would be the GP series from Ergon.
Is it a good idea to get non-cylindrical grip for jumping? Should I get a better technique instead?