I had a G29 a years ago, it was kind of a do nothing really well gun. I would bet the velocity coming out of it was equal to a 40s&w but with the extra bulk. A Glock 23 would have made more sense as a carry piece, cheaper to shoot too.
Now this, this would be a do a few things really well gun. I think I am going to pick one up sometime soon. Or maybe be a giant internet dick hole and comp a G20, lulz.
I recently sold a g29, I felt the same way. The barrel is just too short to fully utilize the cartridge. I'll probably get another 10mm someday, but more likely a 10mm cz clone or maybe a revolver.