No, but I have the GY Duratracs that have almost the same tread pattern as the fierce attitude.
Based on that I would not recommend them for mostly highway use. Look into the Nitto Terra Grapplers. They're an excellent AT for highway and some occasional offroading, I had them before the Dts.
Any updates on the tires? These are the only 35x17s in my price range and I'm close to pulling the trigger.I just picked up a set of 35x12.50x17 Fierce Attitudes. We just drove 4,000 miles on them out west. Aired them down to 10 psi and they worked wonderful on the slick-rock and Mud. Also they handled 18 hour stretches on hot pavement without wearing too bad with a loaded JKU.. I would say we had about 500 lbs in the back along with 2 full sized adults.
I ran the tires between 32 and 36 psi on the road. Tires chunked a bit on the Morrison Trail but that's to be expected after 10 hours on the trail. I would buy these tires again without a doubt. I've run the BFG Mud Terrain and also the A/T in the past, and the Fierce Attitudes were far superior in the rough stuff. Maybe a tad louder then the BFG A/T on the highway but the Fierce Attitude is a much more aggressive tread. I just wish they made these in a 37". I hope this helps