It seems like it is the only kind I get, but I am not sure I would notice irritable as much because I am grouchy when depressed anyway.

My inappropriate speech can happen up or down, but I think that is more general social awkwardness and not recognizing what others don't like to discuss or not realizing I am making an observation others find odd and/or uninteresting. When hypomanic, it makes it even more likely I will say things and I will throw arrogance into the mix. Anyway, it isn't a sign of hypomania fo me.