And now that I have a minute to type a proper answer...
Yamaha converted the forks to upside down for only one year on the R6/R6S chassis, in 2005. A few guys liked them...it was in vogue. The facts seem to support that while everything was going upside down then, no changes were made to the rest of the chassis to accomodate the much stiffer forks. For most people, it created a lot of headaches and crashes. I like my bike pretty loose and light...nimble without much effort to ride, and for the bike to be able to move around how it needs to. So...conventional trig forks for B-rad! (I'm only 160 soaking wet after pizza...)