I have a Volpe with Tiagra STI shifters/brake levers. The bike came stock with a Shimano Deore rear derailleur but the shifting is awful. I would like to go into the granny gears easier under load (I'm a Clydesdale) and was thinking of an XT rapid rise rear derailleur. BUT, the shifting is switched around which isn't bad, would be something to get used to. Anyone out there have this setup? Do you like it? Comments?