I found this article: https://www.fabbaloo.com/news/question-of-the-week-polyjet-patents

Turns out the polyjet patent expired all the way back in 2019, but as I and the author can deduce, there's no prosumer budget printers around. The cheapest I know of is Mimaki's newest offering at £35K. 

Jettability really puts a limitation on available materials and quite a lot of support is needed since no overhangs are allowed. VLM would still need support material since any and all islands will stay on the PET film and get whisked back to the cartridge, but it could be more like Cura's tree supports (or even Lego's) due to the tolerance to overhangs. Additionally, expensive additives to the resin like thinners will not be needed. This 2016 paper on low-cost polyjet printing acknowledges that a cheap printer with expensive materials defeats the purpose of a cheap printer. 

Speaking of polyjet...

I just remembered that I was sent a sample part from the J55. I asked about it days after release and I wasn't actually expecting to get anything, but it did eventually come through. I was expecting some show piece model, not what looks to be the 3D equivalent of 2D printer test page:

Unless transparent CMY colours are loaded into the printer, I belive coloured transparencies (see the cyan and yellow checkerboard pattern) are where the most visual difference is going to be when comparing this test piece to the VLM-like process of the Suspense (I'm thinking of calling it SLSL). It's probably going to look cloudy.

The knobs turn, and smoothly. There's no dicsernable backlash, so the tolerance is likely under 0.2mm clearance. Overall, this is a good test print to have now, since I can design a very similar test and tune the printer to get in the ballpark of tolerance and colour reproduction.