Worth or not its beyond the eyes of the beholder, it's your money and if you like it just buy it.
Real diver's watch? Are you going to wear this for diving? At this price range I don't want to argue about the 4R36, Seiko 5 is not an exotic watch or professional divers range to compare. Again, if you like the design I don't see why not if you can afford it.
Lastly, you buy something to for your self, you don't buy something to please the community.