If you're considering the HD nostalgia grips, I had the black ones and found their shape uncomfortable. The curve in the middle made my hands ache on long rides. I have white coke bottles on my Dyna now and after a year they are a nice worn tan color (don't clean as much as I should), but that goes with the flat paint. Looks more like business than dressy in that case. Fit is better for me than the HD's.
White leather seat seems high maintenance with you're commute.
White Vynil might be easier.
Had white leather in a Challenger years ago. No dark jeans, and certainly anything wet would color stain. If you hit rain it could be annoying.
A buddy of mine has white grips and floorboards on his Deluxe. Really looks fantastic with the hard candy green paint. Still he curses the amount of cleaning it takes to keep it looking that nice.