I don't get this tech vs. rec thing anyway.
You know, I don't get it either. Regs are regs. All divers want a reliable, reasonably priced reg that is easy to service and performs well.
On a side note, I kind of wonder why the company didn't just offer
one product line, at least with regard to regs. From the very beginning, the HOG regs could have easily been sold in a DIN or yoke configuration, with the parts to convert from one to the other sold separately. And, frankly, I still don't understand the reluctance to open up the reg repair class to recreational divers with no aspirations in tech diving. All divers should know how their gear works and how to troubleshoot minor reg issues. If they want to learn how to service their regs, more power to them. Interest should be the only prerequisite for the course.
On another note, I have no problem with a yoke adapter on a DIN regulator. If you do, might I suggest that you tank is way too high in whatever sort of pack you are using, the regulator should be at low neck level, not head level.
I agree. On several occasions, I've used my DIN-configured regs with a spin-on DIN-to-yoke adapter without any issue.
I have, however, heard of other divers complain of the issue of the adapter causing the first stage to protrude so much that it touches the back of their head. As you mentioned, it most likely has to do with positioning of the tank relative to BC. It may also have something to do with the reg design -- a linear first stage configuration (like the MK2) may protrude more than the "right angle" design of diaphragm HOG/Apeks/Zeagle/Aqualung/etc. regs.
If the OP intends on diving exclusively with yoke tanks (most rental tanks, most tanks at warm water destinations), I'd recommend getting a yoke-configured reg.
If the OP intends on diving with a mix of both DIN and yoke tanks, then the reg should be configured in DIN.
If using the spin-on DIN-to-yoke adapter makes the rig uncomfortable, it is fairly easy to do the outright conversion to yoke configuration, given the proper parts, tools, torque specs, and a little knowledge.