In my experience it grew very quickly, but I didn't have any problems with it rubbing on anything. It's about 1.5 in. long not erect after 1 year of the hormone, and I think it may still be expanding. Didn't see anything else around it growing, unlike others, and I had expected that but it hasn't happened so far.
I had small female anatomy before I took any testosterone, a notably small clitoris and generally small in other areas as well, so T seems to have worked quite significantly on it. It just looks a lot like a somewhat miniaturized penis, without the hole ofc, and it (mis)behaves like one as well.
I imagine you're probably worried it will look freakish and bizarre, I worried about the same thing myself before HRT. Honestly I barely think about it in that way after T. It's fine, it works, all of it works, and if I decide later to get things changed around, it looks like they will have enough to work with. I'm actually kind of fond of it now. It's my dick, I think of it like that, what can I say. I'm cool with that.