I've had a chance to put a lot more miles on the IRC GP-110s and do some offroading. I'm very happy with them.
I did some steep hill climbs in the woods, no trail, so I was on a solid bed of pine needles. I slid around like I was on ice with the Distanzias in the same place while these hooked up well.
As usual, I can't say much about road performance as I don't demand much from tires on the street. They handle fine now that I'm used to them. I'll post the mileage on 'em when I get it.