Probably 75% of used stuff has at least some small part of the core drilled out. You'd be hard pressed to drill into the core on a Power Groove, but an Action Packed has a fairly large core. It would be difficult to avoid, especially for the thumb hole, as it's probably going to be drilled mostly into the side of the core. On a Buzzsaw, put the thumb about 6" from the pin and see how easy it is to avoid drilling into the core. You can't do it.
I don't see why it would make a difference.
SH