The Metron rear derailleur also uses an extra-large lower pulley, which supposedly reduces drivetrain friction. In my experience, there's virtually nothing to be gained in chasing Watts of drivetrain friction, but it can't hurt if it's already built in to the derailleur!
My first day on the showroom floor was busy, and packed with some pretty cool sights. Triathlon-specific products are becoming a bigger staple throughout the industry, and the sport is definitely growing in popularity. Have a look through the gallery to see some of the cooler things I found this year, the first of Interbike's new home at Mandalay Bay in Las Vegas.