Welp, I got my Winter Sport M3's put on the car today. Of course the manager over at Big-O had to have me come over and look at the tires after they were put on and while the car was up on the lift. He wanted to show me that I purchased the wrong sized tires, and that they rubbed on the inside of the fender liner in the rear. Which is true until you put the car on the ground... I'm pretty sure there's plenty of room, considering people are running 255/40-18's on their SVX's.
Then JDM Pat aligned the car for me. I had him dial in -1.1deg of camber in the front. The car is much less boat-like now.

Instead of having to iron-grip the wheel and coax it through long corners, now it just settles into the turn and lets you cruise with just a light grip on the wheel... much nicer. 'Course the manager asked me if I was planning on racing the car due to all the negative camber I had dialed in...

racing an SVX on oversized snowtires! I figured, -1.2deg is still within spec from Subaru, so -1.1 should be just fine, and the car turns so much better.
Also, the new tire balancing has taken all the vibration out of the steering... this thing is a freeway champion! I could fall asleep in that thing if is wasn't for all the giant SUVs out there trying to kill me.