I'll agree that the rear of the BA/SM, with it's semi-fat tyre, is as sweat a visual design as you'll find. However, there are some handling benefits associated with less than huge rubber. Also, after buying about three replacements, I sometimes wonder if the visual appeal is worth the cost of a 170 Metz.
Speaking of visuals and tyres - A contradiction, in my mind, would be a mid 50's to mid 60's Sporty - Skinny tyres for sure, but an eyefull of beauty to me.