I've tried the hardware store safety glasses as well. The visorgogs I found to stay fog free far better and are, IMO, easier to wear (elastic strap). I have my mirror connected to my helmet and like the positioning, so I'm not concerned about a stiff side piece on the glasses.
Again, my concern is that below about 0F, the exposed skin left by open solutions like hardware store glasses and visorgogs get very cold and eventually painful, especially if there is wind coming from the sides (which seems to be the norm for me when it gets that cold).
I'll try to fidget with the goggle vents - maybe my helmet or something is blocking them. It doesn't help that I can't pull off the goggles while riding and clear fog as they tend to take my glasses with them.
It may be a while before I can try again. It looks to be relatively warm the next week or so.