I don't know a single faculty member who has positive things to say about clickers, even those who were optimistic.
Technologically clickers are impressively easy to use as well, you just need to put in slides with questions into the main presentation. The biggest disadvantage is students who forget to bring their clicker or have endless excuses about why they couldn't be in class on a certain day.
My grades were good, so I do not think it is the issue of me being incapable of college level of learning.
I also usually managed to get enough participation points or answers or whatever was necessary for the grade, but rarely felt that the whole thing added something to my learning. It felt more like waste of time, especially those parts when people asked or had comments only to show they are participating.