I just recently installed trekking/butterfly handlebars on my 2009 Trek 7.2 FX. I got them for $20 at Urbane Cyclist in Toronto, thanks to a tip from irclean. Previously, I was riding with the stock flat bars with Ergon grips. So far, I'm loving all the new hand positions. The forwardmost position is great for speeding downhill or combatting headwinds. It took a while to figure out how to arrange the brake levers and cables, but I think I found a setup that's right for me.