My 84 Ford Ranger 4x2 always had street tires or all season tires on it, I never saw the point in putting aggressive tires on it which is all the shops carried in the LT series tires and I got around just fine in 18" of snow with standard tires. My 84 B2 has more aggressive tires on it, or well what's left of them I should say, but will be putting P215/75-R15's on it when I get some money saved up. I don't see the need for having aggressive tires unless you are offroad on nasty trails every day. My toyota 4x4 truck came with Michellin P275/65-R18's and were a 4 ply all season tire as well and that truck got me into places that I probably shouldn't have been but it got in and out just fine with a little 4WD help occasionally.
Unless you are going to drive offroad on really nasty trails you really don't need an aggressive tire. However, if you haul/tow a lot of heavy loads the LT tires have heavier side walls and better heavier tread to help haul those heavier loads. Other than that the LT aggressive tires aren't exactly needed.