I've been running the BFG A/T KO's for years on all my trucks. I like them a lot, and the ride and performance makes it worth the shorter tread life IMO.
I bought a 2015 -2500HD and can't wait until the OEM tires wear out, and will probably just upgrade and sell OEM for whatever I can get. And go with the BFG again.
We now live in Florida, but lived in the NE snow country for years, and do a lot of back-country camping all over the USA. The BFG are very good on highway, and dirt, gravel, mud, snow, rain, a functional all around tire. Sometimes, we pay for that with less tread miles - to us, it's worth it.
We generally get about 40K plus miles on a set.