Greetings and welcome,
Based on your post, you are after an AT tire for the other 3 seasons and trail riding. Since you are spending 70% driving time on the highway, I would still look for an on/off road AT tire that has winter mountain flake symbol even through you have a dedicated set of winter tires.
The winter mountain flake tires will give you an advantage in dry and wet conditions that one faces on the highway. This is because they have an excellent tread pattern to evacuate the water and the grip based on the natural oils they use in the tread compound. Depending on which one you get, their is a possibility if the tire has a low rolling resistance you can either maintain, gain or drop less in gas mileage. All this depends on the size of the tire you ultimately settle on. Many of these tires have been known to have a nice quiet and comfortable ride on the highway.
If you carefully search the forum here, you find a great many AT type tires. Depending on the trail conditions you face, you might need to look at the more heavy duty tires like the GY Duratrac, BFG KO2's, or even the Nitto Eco Grappler's.
Enjoy the JGC and happy trails.
Best for now.
Laredo X, Trail Rated, QTii, Sele-Terrian, Quadra Lift, Off-Road Adventure Package ii, Nokian Rotiva AT, Tow, AFE CAI, DiabloSport inTune 1000-DCX, Custom Sound System ( HAT speakers, JLAudio , Pioneer , JBL MS-8 & RF 3.sixty.3 -- see the writeup link below for more details)