Will Irish dancing make me less able to dance other types of dances?

I know this question may sound stupid, but I was wondering if maybe, because in Irish dancing you only move the lower part of your body and not your hips or arms, will it make me seem stiff or make me not be able to dance say jazz, hiphop, belly dancing or even just club dancing?

Also, how much exercise is it? I heard you get great leg exercise , is this also true but the butt?
I know, sounds stupid, but I love the Irish dancers and would absolutely love to learn how, but I’m afraid of the dancing-other-things thing and about the amount of exercise.. will it be good for my body (legs and butt?) Any of you experienced Irish Dancers out there care to share their experiences? Or even beginners?

thanks!

I am a a classic dancer. I do ballroom, irish step dancing, and ballet. I originally did Irish stepdancing, then branched out to Jazz and hip-hop and things like that. It’s great to start with, because personally, I think the feet movements are the hardest to master, and Irish step dancing is mostly legs, so it helps. It’s an amazing workout for your legs, knees, butt, and thighs.