Good idea! Rated 4 out of 5 stars
Some tiny problem: when you start typing very quickly, the second character may get missed. E.g., open some page and quickly type "kmc", then I get only "kc". Tested multiple times and still fail (you have to type very quick). Maybe due to the laggy Firefox UI response.This review is for a previous version of the add-on (0.3.9.1-signed).
No such problem here, all "kmc" got in upon quick typing. Further testing on "kkk" works okay too. Perhaps it is in conflict with another addon that utilize the awesome bar too?