Owning a Sub & GMT

[Sammk]

Ive seen in some pictures around this forum of people owning a Sub and a GMT at the same time. Aren't they too much similar to each other to have both? THe same bracelet, same style bezel (apart from the numbers printed on it), same clasp, same hour and minute hands.....For me if i own two watches they gotta look completely different to one another (which is y i own a DDII and a Sub). I love the sub (and hence the GMT), its my fav Rolex...but i still can't picture myself owning both.