I also prefer holes. The shape fits the thumb better, giving superior contact and control over the motion of the blade while the knife is in the first 120 degrees of motion. I think studs have the advantage in one handed closing, but that's usually not as big a deal to me as opening. However, thumb studs generally allow a sleeker folded profile. Some people have mentioned trouble sharpening close to the handle of the knife without removing the studs on certain knives, not sure if the griptilian has this problem. However, I wouldn't let this stand in the way of getting D2 steel.