Seriously guys, get one of these (on sale for $90):
http://www.canadiantire.ca/en/pdp/ma...l#.UnFZW1OQN5Y
And the cheapest one of these you can find ((this one is 30 bucks):
http://www.canadiantire.ca/en/pdp/ce...l#.UnFZ1VOQN5Y
You will be able to to bolt your winters on and off for the next decade, without having to make an appointment. It takes me about 30 minutes to do mine. Less time than driving to a tire shop and back. I went with a corded electric impact gun I bought at crappy tire 15 years ago for 30 bucks on boxing day, and at least with corded, you don't have to worry about the battery wearing out on something you will use twice a year.
Any moron can do a wheel swap in under an hour if you have the right gear.
edit: Never tighten them with the gun, I use a torque wrench, but usually 'snug' is adequate if you don't want to buy a $150 wrench.