I agree with you. But, the distance between "OW, buying first reg set" to "Tech, doing own reg service" seems pretty large, to me. In the intervening "distance", there is a LOT of room for having a single tank reg set that is dedicated and also different than what you use for tech.
I just ordered a bunch of ScubaPro regs, which will be used for BM and SM doubles. I will have Dive Rite regs and a Hollis O2 reg for my deco cylinders. And different Hollis regs for my single tank reg set. I don't really see that as a problem. I could buy 6 SP service kits, or 4 SP and 2 DR service kits. No big deal. Once I buy all the tools to service the SP regs, the extra tools I might need to also do the others is a pretty small additional cost.
Anyway, I think we are pretty much on the same page. Buy good regs to start and you won't regret it. I still think buying DIN is more important than piston vs diaphragm or sealed vs unsealed...