That's the tire. They are directional, many quality rain tires are due to the "v" grooves. As long as they wear well the rotation pattern shouldn't be an issue. The only downside is the reduced off road performance and you might prefer the off road look compared to the street truck look that these have.
I appreciate the info and I'm sure they're great in the wet -- but I do prefer side-to-side rotation. And as you said, a different look for my 4x4.
I've been reading more reviews (sometimes I think I research
too much!) and though most are good for Toyo, Revo, and BFG A/T, there are a few bad ones thrown into the mix -- contradictory reports like slippery in rain or rapid tread wear... Kinda makes you wonder.
A lot of guys complain long and loud about the Rugged Trails that come on Tacomas. With 20K miles on mine, I don't think they are bad for most highway use (or light off-road) -- but they are terrible in snow. And although they are wearing evenly, they won't last too much longer... Not Goodrich's finest product.