No, I'd say it's sensible to use road parts if you're riding on the road. The only caveat is drive train parts: Road bikes use 1/2 x 3/32" chain while most track bikes use 1/2 x 1/8" chain. You can run track chain on road components but NOT vice-versa. Modern road chain rings have ramps, pins, and profiled teeth to assist with shifting; these features are superfluous on a single speed or fixed gear and in fact may lead to inadvertent chain derailment.
HTH...