I havent taken the time to read much of this thread, but FYI, i just bought from the "Darevie official store" on Aliexpress a bib with the "elastic interface Paris HP men" pad, which afaik is very well regarded (120kg/m3 density in some parts, all foam, no gel), for 29 eur, shipped to Europe. It's black, nothing special, but it's the 1st time i see BIB at this price point with this pad.
It's under the "choiceday" thing on aliexpress, so it's unlikely to last, i guess? Headline price (BS, for sure, but still) is 70 eur. Their lower spec BIB from the same store is several euro more expensive.
The store itself has thousands of transactions, 98% positive reviews, blablabla.

I tried a pair of these and the leg was short and the opening strangled my thigh.

Can't say I was overly impressed with em

I havent looked at geometry charts, but the seatpost looks a bit like a triathlon seatpost with the ability to move the saddle mount fore / aft. But if that's the case, by how much? a triathlon seatpost would typically have much more play.
And so from that, is this supposed to be a bike that lets you sit more vertical vs BB, like a triathlon bike would?
The shape of the seat tube is reminiscent of the Giant Trinity, so is it just looks, or is that bike you can dial in more than typical road bikes to lay flat and go fast on?

Me too.
I asked Workswell for the 306. But at the moment the interesting SL Version is not available.
Is from 316 and 366 a SL Version available?

It just so happens that the Taipei Bike Show is happening this weekend, and I will go check it out.  I know Longteng has a booth, and likely other Chinese OEMs as well.  I'll report back on anything interesting.  (Let me know if anyone has any specific requests or questions in my DMs ... but I won't take requests for Hambini hairdresser pics, sorry....)

Does it work? Does it keep warm? I watched this video last month and the claims are pretty incredible