Brown shoes with black pants. Yay or nay?
Doubtful although possibally if the shoes contain black piping.
The problem is that it violates more than one rule of dress, beyond traditional English styling (black/black/black, brown/brown/brown) the one thing the dicussion seems to be forgeting is shoes should always be darker than your suit trousers. With this in mind, ingoring several fashion "rules" tends to look clownish without drastic measures (i.e. multipattern sport coat) from a designer. If you really want to go for this type of look, I would suggest burgundy or a deep mahagony color rather than brown per say.