Originally Posted by
MikeyMK
You can always cross them. My Tiagra rear derailleur works great with both Altus, Nexus snd LX shifters, and both 8/9sp cassettes. And i use a Claris front derailleur with my current 2/3sp XT front shifter which has an mtb-only dynasys rear set-up.
Indeed, my Giant TCX has a Tiagra RD, Sora FD and Sora brifters. Thought I had issues with the RD but it was the cable outer casing. Shifting is crisp since I changed it. What I like about the Sora brifters is the location of the down paddle. I'm most often on the hood and I find that pushing that little paddle with my thumb is easier and pushing the bigger paddle with my fingers.