Soooo....decided to go with the Rugged Terrain. Decided to take one for the team and figured I follow up now that I've got about 7,000 miles on them and have put my truck in a variety of terrain.
Overall, I am very pleased. These tires have exceeded my expectations. Road manners and wet traction/braking were very good. No change in gas mileage from my previous set of tires. Dirt/gravel trails both dry and when it's raining, I find that I have very good response and traction up at speed when I'm horsing around. I've had A/T's before on my 75 FJ-40 and a F-150 and I actually like the Rugged Terrain better in the areas I've listed so far.
Off the trail in heavy pine-needles and loose dirt, I've had no issues... On par with other all terrain tires but I will admit that I prefer the BFG A/T in these areas, specifically going up hill... little more bite with the A/T but the Rugged Terrain passes the test.
I'm not a big fan of mud... unless it's someone else's truck but I gave it a try because my curiosity insisted. "Virgin" mud (i.e. no ruts to bottom out on) was a challenge as I expected but with some skill on how to keep the tires self cleaning I made it through a couple passes. I slid around a lot and that = fun but I found myself in trouble in the deeper stuff and needed to be pulled out when I tried to get going from a stand-still...no suprises. I've done the same with the A/T's and had similar problem but more control with the A/T's and my knuckles weren't as white!
Overall, the Rugged Terrain is a solid tire that shines on a daily driver (especially in the rain) and does the job quite well off-road on trails until you hit any significant mud. Obviously if you want to mud, get a different tire. I am happy I picked this tire over the A/T because I see mostly pavement. There's a light hum at high way speeds but nothing that will piss you off. After 7,000 miles I have very little little wear. If it wasn't for the dirt ring on the tires, I would think I just put them on! No issues with balancing as well. A little pricey but with the way they are wearing I wouldn't be suprised to get 60,000 miles out of them!

Edit: Forgot to add a couple things... I don't have snow in Louisiana but I would venture to guess that they wouldn't be a good tire in the snow... there is no siping on this tire and I heard this is a must for the snow... Also one annoying thing I had to get used to but now I don't notice it as much... these tires will pick up every little rock on the planet. Once you get back to the pavement it'll take a couple seconds once you get up to speed to expel them all...