I use it for my personal workstation and I want to love this case, it's really so friggin close to be amazing but too many quirks or things left undone
I'm in a similar position with my current personal rig, which uses a Raijintek Metis (which is pretty similar in layout to the Primo). I want to love it, but the poor build quality, lack of ventilation and lack of cable routing options make me itch for a better solution. Which is why I tried to buy the Primo, and why I'm on this thread.
Honestly I'm pretty close to eating the cost and commissioning someone to design a case to my specifications and have it bespoke manufactured. I have multiple ideas for unique sff layouts and who knows, with a couple prototypes I could have a kickstarter or something in the future. The only thing is that if I were to go that route, I would want multiple case designs made up so that my company's launch wouldn't be all-eggs-in-one-basket. Even though that's been a successful strategy with the A4-SFX, S4 Mini, NCase M1 and others, it's not a strategy I like. Plus, I think I have some interesting ideas for part modularity and ikea-style self-assembly that would keep manufacturing costs down.
Maybe I'll invest my time into learning to use CAD properly.