I got the combat cut on my Supertuck and I really like it. When I grip for a draw, my hand stays in the same position from purchase to the shot. I have never tried a regular cut Supertuck, but I am pretty sure my middle finger would not be able to wrap around the pistol during purchase and I would mostly draw the pistol with a thumb and last two fingers.
Get the combat cut.
Pax mentions flapping of the leather on a combat cut. I respect her long term experience, but I almost cannot imagine a Supertuck doing that with the thickness of leather they use. On my holster, when the pistol is holstered, it pretty much keeps the leather from bending at all, let alone flapping.