Generally, no.
You will find many shoe-sale sites and fashinistas who will disagree for their own reasons, but when it comes to a formal business setting, formal business rules apply. Period.
Open toed shoes paired with a business suit can actually look great together, but they are still not considered acceptable in a formal business setting. It does not really matter who sets the "rules" for proper business attire, if you want to show that you are educated in the matters of proper business protocol -- and that includes business attire, skip open toed shoes for formal business wear.


