That's a great idea. It worked for me, I toured the coastline of Maine from Arcadia to Campabello with flats one summer. But sitting up on flats may not do justice to a tricked out road bike, and I've discovered drops aren't half bad - as long as you're not trying to mountain bike with a racing frame, like we were - back when StumpJumpers were new. Here's the most recent incarnation of that concept - flat bar tourer.