I'd choose the K2 Ultralight Skinning Knife. I have a set of 150 solids and already planned on ordering some more. It'd be nice to try out the new knife!
I would choose the skinning knife. I have been shooting the 100 grain single bevels for a while now, I have 6, and my son and girlfriend got me a half dozen double bevel 100's for Fathers Day. I could not be happier with the quality and performance of the Ironwill broadheads. I would love to put that skinning knife to use.