Winter (Alignment) is Coming
 

Running Firestone Winterforce 215/55/16 on stock WRX 16x6.5 wheels. I got them cheap from a buddy, but when i wear them out I'm probably going for 205/65R16s.

I run a lot of autocross during the summer which is the reason for the -3/-2.2 and I've got access to a hunter rack to do my own alignments on base so it's not a big deal to switch it out.

205/65 is going to be really tall, but that's beside the point at the moment. With your current snows I'd personally shoot for a conservative setup as close to 0 as possible...toe should be a hair in for tracking, and camber maybe a fuzz negative. They're not performance tires, so don't use a performance setup, and I think the tires will be happier. If you were running low profile winters on wide 18s, then it'd be a different story. Just my opinion.

He was talking about street driving on regular snow tires with the comment about grip.

You're not wrong about ice rally tires with big studs, but not many people daily drive on those :D