@Bones the A/T tires are good for states that the machines are street legal, but the lack of spacing between the tread blocks means they will clog up the moment they get into any sort of mud.
Just my personal opinion, but I chose M/T tires and not A/T tires because these machines are really meant to spend most of their time off the pavement. I suspect a lot of the users on this forum may even find that truck rated M/T tires aren't aggressive enough for their usage. The level of traction in deep mud or sand that even a light duty M/T offers, can't be had with an A/T tire. For those lighter duty users who ride trails, farm fields, back yards, and woodlands.. an M/T tire tread design fits the bill almost perfectly.
I like to refer to A/T tires are jack of all trades, master of none. You can be OK at everything, but can't be great at any 1 thing if you are all purpose. If you are specialized like M/T you can be much more useful when the ground gets soft, and the hills get steeper, even though you still traverse pavement quite well.