Hello, my name is highlyselassie and I am a fit Nazi.
Whilst the sloping top tube is good idea for mtb's, where is the comparitively longer head tube to make up for this slope?. Who really wants to ride a mtb with 5 inches of drop to the handlebars, what kind of control does that offer over technical terrain?. I can understand people wanting standover height on a mountain bike, it seems fairly sensible, but...
standover height on a road bike, what purpose does this serve?. A ballsack is comfortable enough straddling the top tube, aslong as it isn't being put under pressure from below. Even then, as alanbikehouston has said you can stand on one foot with the other in the pedal tilting the bike to one side. This is not a difficult to learn or execute.
Everyone is so afraid of the potential harm the dreaded top tube can do, that they sacrifice comfort on the bike for the illusion of safety off the bike. Where did this 1 inch clearance thing come from anyway, why an inch, why stop there?. Why not 2 or 3 inches, surely this is safer still. It seems, like so many things bicycle related, someone plucked this idea from the air and the forces of fear and marketing(in las vegas?) have made it stick.