I dive (Mixed Gas for over 10years & have been using a Closed Circuit Rebreather for the last 7years)all year round in the UK, doing about 80 dives a year, around 30 of those are in the 50-90m range(sport diving depths are a max of 40m), so I feel suitably qualified to comment. I have never worn a watch to go diving for over 12 years. All divers I know wear a dive computer & most wear a dive timer as a back up. Usage of computers & dive timers became mainstream in the 90s & dive watches were then made redundant for diving.
I don't know anyone who wears a dive watch to go diving, the purpose of the watch was to monitor your dive time, the best dive timer (Uwatec) costs £80 & the battery will last about 7 years, so why on earth would someone wear a dive watch?
I have one as do most divers, but it's only worn on dry land, I suppose it's a way of telling everyone in the pub they're a diver.
I must say the rubber strap ones are great for MTBing, very rugged & waterproof.