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I have in fact thumbed a wall dive when one in the team had a moderate BCD dump valve malfunction preventing them from keeping their BCD inflated. We were - as always - diving dry, so the person had an intect source of buoyancy, but since we already were on the backup I felt it prudent to surface, fix the issue and wait for dive #2. I'd do that again in a heartbeat. I've also experienced similar issues on a shallow dive close to land, with a hard bottom at OW cert depth, and I was fine with only one source of buoyancy under those conditions. Just as I'm fine with continuing a dive after a primary light malfunction if it isn't dark.your level of caustion is not what most divers take.
And where is this? So I can avoid going there, I mean. Like everyone else around here, I took my OW in a DS and all my diving around here is dry, so I like to believe that I know how to use a drysuit. Also, IME an inverted ascent isn't a big issue if you're decently weighted, and the biggest risk is a seriously bruised ego I'd be seriously p.o.'d if someone refused to taxi me to a dive site just because I was using my preferred gear.As DS goes they are not allowed if fear that the user will become inverted and have an uncontrolled surfacing and the boat be liable. Some boats will allow with a cert. Its a case by case thing.
Purely by accident, I happen to have a DS specialty card since my instructor offered us the card for the registration price as we were issued our OW certs. I thought "why not, it might come in handy one day", but practically no-one else here have one of those. I've seen ops declining to rent out a DS¹ to someone presenting a warm-water cert without documentation of drysuit experience, but any op refusing to allow - or rent - a drysuit to a customer with a nationally issued diving cert would certainly lose business.
¹ Not for fear of litigation, but out of genuine concern about the diver's ability to handle a DS.