so update, finally got it out in the rain and on a highway speed road trip.
Rain - They perform just like any other A/T i've had. Do they break loose easier? Well yea they are an A/T and not an all season radial. Did I think it was any worse or better than any other KO2 or whatever A/T? Nope, bout average. So yes you will definitely notice a wet traction difference going from the stock SRA to this A/T, same as pretty much any A/T out there, thats just the tradeoff.
Highway - Lets just go ahead and state the obvious. You are going from a 4ish ply SL rating to a 10ply E rating(not actually 10plys as the ratings are now 'equivalent to' references). Much stiffer sidewall tire, means much stiffer ride. I definitely noticed it above say 68 in regards to bump compliance. You will feel pretty much every bump in the road, vs. the more spongy ride of the SRA that soaks up the minor bump/vibrations. So if you value highway speed comfort as a top priority you may want to try before you buy to see your own personal tolerances. Bothers me, but the wife didnt seem to notice that much. I did feel these were a bit worse than some of the other A/Ts i've had. Per my prior post around town speeds and below 65 its just fine, zero ride difference.
So after a month of ownership and a 700 mile road trip I'm still pretty happy. I did have to take it back to have the tires rebalanced, which seems to be a common issue with these, but again nothing that wasn't quickly fixed. Id advise that you have them road force balances, which is something i do for all big/heavy tires. Only thing I'll be looking to correct is the 65+ bump compliance, so now I get to go down the shocks/struts rabbit hole to see what kind of upgrades are out there which some increased damping capabilities. I played around with the air pressures and looks like 42psi seems to be about the sweet spot. Seems the stiffer sidewalls require a bit more pressure to bump out the center of the tread.