That's why I brought it up -I'd hate for you to buy a user, then just be frustrated when using it. The diagonal peins aren't just handed, the technique for their use is slightly different often. They are supposed to be very ergonomic when used a certain way. I would guess that, if you surveyed smith's who have actually used one correctly for a while, 25% wouldn't care for them.
Being a silversmith, I am just guessing, and never having swung a diagonal pein myself. But, being a silversmith who believes that my material takes the shape of my form, I get into a lot if weird places. Especially with synclastic forms. I think that, even though I am tapping instead of whomping, the swing and feel is similar. Especially after several hours.
Chilly