Mismatched

I thought this was interesting: at some restaurant (I forget which), in the men's room, I noticed that the urinals were completely different. Odd.

Why would they do that? Did one break, so they replaced it -- but with a different brand? (And if so -- how does a urinal break?) Or did they just get a good deal on a mis-matched set of urinals: a discontinued model, perhaps?

--GG