Yes rhwestfall, it is a dedicated group. I really don’t advocate this kind of activity to the ‘masses‘ of divers out there’s. I am one of the ‘unique’ few where it piques my interest. I have dived DHRs for photo applications since ‘83. I was apprehensive at first. It took a trial in a training pool and practice to become proficient diving with these regs. I get gawkers of all ages, but very few, to my knowledge persue it. Pete and Andrew were one of the few that make it a ‘Father-son’ activity. As my observations go. Most new divers ‘ go for the foreign-made, unpronounceable brands of gear. It’s cheap, it works. Is the recent SCUBA training taking this into consideration? Most of these are 1 or 2 time ‘resort divers’ and the gear stays in the dark recesses of a closet or utility room until discovered later. Will it work then? Who knows, but it was cheap and had little challenges or redeeming value.The "problem" with going vintage is that 99.44% of the shops won't support the gear (service), even "modern stuff" like the Kraken or Phoenix/Cyclone and HPR, and will typically have staff that perpetuates "urban legends", thus making it all up to you to figure it out. Sourcing parts, tools and knowledge is a pretty heavy lift.
Look at the demographics of who was at the event. I think there were only two "young gentlemen" with their fathers...
Think about the reaction to the infrequent young diver there at the classes going on who looked through what we had there, and how they interacted with us, despite our friendly ways....