Sweet lookin rig you've built yourself, I'm lookin to do some more work to my jeep. After Friday I'm ordering a new lift for it. Also keepin my options open for finding a new motor for it. The old 258 is all worn out in it.
...... As for the Irok's, years ago I had a '84 CJ-7 with 36" Super Swampers (this was back when they only made one style tire). Excellent tire, absolutely sucked in the heavy snow and ice.....
After thinking about it, I stand corrected. It wasn't the Swampers I had problems with, but Mickey Thompson Baja Belted at 33"x12.5"x15". Excellent trail tire, loose dirt/sand, good pavement wear, moderate in the mud. Really sucked on ice and snow. The Swampers (called TSL radial now I think), sized 36"x12.5"x15" were excellent off-road tires, excellent in the mud, not bad on the street. I got rid of the Jeep before I had a chance to run these in the snow. Man I miss my heep... 
Not to go off topic here, but earlier this year you suggested that it was the rear axle shafts spinning out in the hubs that caused my 81 CJ-8 to stop going, well just wanted to say that last weekend my brother and I finally finished up the new axles and brakes on the rear, and now it's back on the road drivin around. Thanks for the heads up on that.