for a "just in case" use, not for regular use, I kept a pair of snow socks in my van. Take up a lot less room and a lot cheaper. Lack the durability but will get you out of trouble and far easier to put on. I found with chains that if I was only very occasionally putting them on then I struggled, and risked marking the vehicle.
I presume that you have winter, or at least MnS, tyres on the vehicle?