Originally Posted by
DaveSSS
The escape thumb button can only shift one cog smaller at a time. One click of the left thumb button drops the chain to the little ring, compared to one push that goes through 3-4 clicks with all others.
While most people complain about the Escape mech, they really aren't that bad. Being able to drop the entire cassette with one motion sounds cool. The fact is that most of us just don't need it.