I recently slapped a set of 285/75R16 General Grabber A/Tx's on my 2008 X. Slight rubbing in reverse with tires near full lock WITHOUT MELT MOD. When I install my lift next weekend, I'm sure the rub will go away.
As for the performance of the Grabbers:
The tire has a fairly aggressive tread pattern and shoulders for an A/T. There is a lot of siping for wet performance. I recently took my truck up a moderate trail into the Sierra Nevada mountains and encountered many different types of terrain such as degraded asphalt, rutted dirt, coarse sand, mud, snow, ice, slush, and rock gardens. I found the the tires' performance to be extremely satisfying. There was only one point on ice going uphill where I lost any traction at all, and it was only for a fraction of second.
Performance by terrain:
Broken Asphalt: Great, obviously.
Rutted Dirt: Very Good.
Coarse Sand: Very good. Sunk in a little, but I was running 22PSI, lower tire pressure may have mitigated the issue.
Mud: Very Good. Could feel the tires biting and puling all the way through. Of course, an M/T would be better, but the grabbers were genuinely good here.
Snow: Fantastic. Bit right in and didn't slip much at all. Snow was between 6" and 18" deep.
Ice: Very good. Didn't encounter too much ice, but on the stuff I did encounter, the Grabbers inspired confidence.
Slush: Surprisingly good.
Rock Gardens: Great! Went over every granite rock no problem.
As far as highway performance, these tires are some of the best in the A/T category. They are a tad lighter than other comparable tires at 60.5 lbs. These could theoretically immprove mpg, but running 33s on an X kills mileage regardless. These tires are SUPER quiet for an A/T. I honestly don't know how they made them this quiet. The grip is adequate on pavement as you'd expect.
Overall, great tire. Highly recommend them. Cheaper and lighter than the KO2s. KO2s are great as well, but just wanted to inform you of another option.