^^^ This.
Unless the snow is really coming down, e.g. more than 1 inch (2.5 cm) per hour, you'll have no problem in street shoes. How do you calculate more than 1 inch per hour? If you step outside into 1/2 inch (1.3 cm) of snow and leave tracks and you look outside 15 - 20 minutes later and they are covered, it's "snowing pretty good." Most folks have no problem wearing street shoes in an inch of snow or less. Even walking in 2 - 3 inches (5 to 8 cm) typically isn't a problem with street shoes, though you're liable to get your socks/ankles snowy and wet.
A little snow exposure won't typically ruin your shoes - stomp your feet well (on a rug!) when you get inside and you're all set.
FWIW, there are (mostly) two kinds of snow - wet and "packy" (makes good snowballs!) and dry and fluffy/powdery. You'll usually get wet snow when the temps are above 25 °F (-4 °C) and dry snow when the temps are below 20 °F (-7 °C). These aren't hard and fast rules, but will get you close. There's also "slush" - wet snow that falls on a warm surface and sticks for a while before melting. You'd probably encounter slush on an asphalt paved parking lot. It's just sloppy and not normally slippery.
Wet snow is usually more slippery than dry snow as it tends to "pack down" under your footfalls. Dry snow won't stick to your footgear like wet snow will. Walking on level ground in either isn't normally treacherous - but if you're in a hurry and not paying attention... It's no different than walking on muddy ground or wet grass.
My best advice for navigating snow? Pay attention, go slow and hold your significant other's hand. If you hold each other around the waist, when one starts to go down, you'll both go down. Holding hands allows you to steady each other without being a burden should one need to suddenly regain their balance. I've been holding Mrs Smoke's hand in all kinds of weather for over 43 years and we're still vertical!
And remember, the only silly question is the one you didn't ask. Have fun in the snow!
