You're welcome - glad to see you have it really sussed out. Finding something that works for you and knowing it won't just up and disappear off the market (as many fashion frames do) is excellent.
Can see the optician side as well - they have an established process and deviating from that is unwanted faff. However, they are perfectly capable of ordering a lens to a customer given spec. A short 'if this doesn't work then lol you suck' disclaimer is all it would take to make the sale.
Resin is well within reach of the casual hobbyist now - we're talking a couple hundred dollars to get an entry level machine, and a little extra coin for the materials/consumables. I have a (now old) Mars 3 that is ticking along beautifully.
Safety/PPE/ventilation is the main downside compared to FDM. It's a stinky job but you can't fault the results for presentable and functional parts. These things can print stuff like screw threads and other teensy features perfectly.
Offer always stands if you ever want something to demo and can't get anyone more local to help :)
Can't argue with that. I still use FDM as well for a lot of models - currently running an old Ultimaker 2 and a BCN3D Sigma D25 for the bigger batch jobs.
The latter is mostly stock but the UM2 is pretty much unrecognisable from when it was new now; a real Ship of Theseus. Bigger gantry, uprated board/head/feeder and tweaked Tinker firmware to suit. Shoved a Pi with Octoprint in there too.
While you can get flex & specialty resins, you are right that you're certainly not printing them alongside the regular stuff in one run like you intend to, unless the model is redesigned in multiple parts. They are also priced to suit :|
Will be good to see what you come up with. Almost all of my prints are the work of others these days. I'm not much of a designer and the furthest I go with CAD is putting terribleness together in a 12 year old version of Sketchup ๐