Look at it this way...The snows will probably cost less per tire than the replacement tires that you'll eventually need. So, if the snows are able to displace the wear out of your summer tires, then it is actually the cheaper way to run your tires. But, if you don't agree on that logic...if the snows help you to avoid a Winter accident or provide an extra degree of safety, then it definitely is the way to go.
Just my thoughts !
2018 Equinox LT1 1.5 L 4 cyl, AWD, S/R Cajun Red Tintcoat/Black
2010 Equinox LTZ 2.4 L 4 cyl, FWD, S/R Cardinal Red/Black