I don’t agree with the explanation about oyster because it was used when screw pushers increased waterproof ability.
I to had one of the very early modification Daytona’s by ProjextX and the Pro Hunters are demanding high prices still I believe so it works for many.
For the record I think they’ve made a good job of it.
End of the day the feeling you get when it’s on your wrist is all that matters.
Enjoy.
M.