I too run all italian mutts and am happy with them. Then again, I had carniolans several times and one of those hives was my calmest hive ever, but then again that isn't much help if they can't make it through the winter.
But if they are uncomfortably aggressive, ie if you can't stand within a few feet during a nice summer day, if they routinely come out looking for you, if you can't calm them down with smoke, you may want to requeen sooner than later.
And wear your veil/gloves when you work with them even the simple stuff... ;)