Hey Jake...
I Have AT/Revo on my other jeep... they r nice tires on snow as well as if you take them offroad.... they have a decent wet driving comfort too..
but the only negative is that they r very noisy on highway driving... since GX is already a noisy suv on high speeds... tires make it ridiculous... but it depends on the use.
And personally i think switchin from duelers to cross terrains is only advisable if lexus is compensating for the switch. if not, then i would recommend that you consider TOYO"S. They r fabolous tires.