Originally Posted by
FEVER
As far as the clutch, I've seen a few videos that explain it as a chain tensioner that keeps the lower portion of the chain from slapping the frame. Seems the newer microSHIFT Advent, 9-speed's actually DO have this feature so probably a non-issue. I know I'll end up off road exploring my local trails.
That's right. They are now pretty much standard issue on mountain bike rear derailleurs and have more recently started appearing on road bikes too. But not something to worry about either way for the kind of riding you are talking about.