What I like is that those guns were made as cap and ball ones, were in good numbers converted and, later on, were built as "conversion" models.
So, in the end, you have all possibilities.
Uberti makes them with the possibility of buying two cylinders: one for cap and ball and one for cartridge.
I find that nice enough to start thinking about one of those wheel guns.
Plus, that revolver is really good looking to me.