I'm not exactly tall, 5'7", but have ridden bikes where I couldn't get my foot flat down all my life so its not an issue. The standard seat in the front high/rear low position is the most comfortable riding position for me, so it just means I have to either slide my arse to one side, or put my right foot down, depending on camber. Its more about your confidence than the height of the bike.
Mark
Mark
heaver