After a few days, I still like it. A 3100 mah AW IC battery lasts me right at 2 days. I do really want to try and vary the voltage a little bit but I haven't ordered any different batteries yet. To be honest, I'm really interested in picking up a provari so that I can adjust voltage on the fly without stacking batteries.
As for the fitment of these specific cartos, I did get the ego adapter and I still have to use an ego adapter with a 510 shorty to get it to clear. Not a big deal, it fires every time and has been totally trouble free.