OP may have been pointing it out to the truck buyers, but it's used in bike motors more than you would think. Very commonly used in dirt bikes. My 250F is 12.5:1 compression and spins 13,500rpm, as do most all of them (some a bit more even). In motocross use they see this rpm almost constantly (the sound of motors bouncing off the rev limiter is common at the track), along with constant clutch abuse, with 850ml of oil keeping everything alive. They do this for 60-80 hours between top end rebuilds (double this for bottom end rebuilds) using RotellaT oil. Hayabusa motors are pretty mundane and lead an easy life compared to this.
I've not tried T-6 in my Busa yet, but will probably give it a shot on the next oil change. Even at full price, it's 1/3 the cost of the Motul 300V I've been using, so I could change it twice as often and still be $$ ahead.