I had the clicky on mine but didn't like it because it was too sticky. I also had it come on in my pocket and run the battery dead. I put the regular tail back on and use it as a twisty now and it works just fine.
I carry a Preon 1 w/ a 10440 in it. Very bright on high but will get warm after a few minutes. Someday I would like to try the Revo and Peak Eiger too as those look like great AAA lights as well. Revo can't use a 10440 but the Eiger can.