cheap backup shoes for workwhat do you guys think...AE Banffs

so tomorrow its going to rain/snow like crazy in NY and i have bean boots rdy to wear on the commute.
do you think the black AE Banffs are too casual to change into at work for these type of days?

i dont want to take a nice pair of shoes and leave them at work because i have different offices to go to during the week.

if those are too casual under pants, can you recommend another pair of shoes that i can throw into my daily duffel bag and carry around for a quick change...somewhere around the Banff price of $125 or so.

i work in middle office investment bank. don't wear suits everyday but pants/shirt/tie and again this wont be a regular shoe, just rainy for those rainy days when i need to change pairs