I have currently 44 reps. I also have a waterproof tester
So far for the 39 rep diver watches I have, 37 were waterproof to >50m from the seller (Joshua). The 2 that were not were because in one case, there was no O ring fitted and in the second case the O ring was mis-fitted
Basically with all divers, open the back, grease and refit the O ring, stick some grease in the crown and you are good to go
I wear a watch all the time, including to shower and swim (3m). Reps can easily take this (I don't dive with my reps though, I wear my Christopher Ward C60's for that)
Anyone near Heathrow UK that wants a watch checked, greased and depth tested just PM me
S