Well, after many hours working with it, I've discovered a few things about it:
1) it's incredibly detailed where detail is needed, but it's not the 3.5/PF kind of detail where everything has a stat block. It's more, everything has a price tag. The game was clearly made by an economist, as PCs could spend their entire career arbitrage trading between cities.
2) its not very well-written, and the creator knows it. He's great with numbers but not with writing. Lots of typos, ambiguous paragraphs, and rules where you wouldn't think to look for them. Theres a multi page errata document, which is nice, but it doesn't resove everything. I've spent a lot of time on the Autarch.co forums trying to find answers to things, and usually do, but not always.
3) Overall though, great system. Once you grasp the rules they are quite cohesive and seem to scale well. Played as intended, the game eventually evolves from a P&P RPG, to a Wargame, especially if you utilize the Domains At War supplement.
4) The supplements are phenomenal. Rules for custom building monsters and classes that the creators used to make the game itself. Wealths of good ideas and drop-in pieces.
Overall, having not yet run it, i give it a 7/10 as a game, and a 9/10 as an OSR/BX Clone. Loses points for the poor Core Rules presentation making the high level of complexity almost overwhelming.
This wasn't gonna be a product review when i started typing, i swear, lol!! Once my first game gets off the ground and i get a feel for it, ill probably run another one here. Want me to keep you up to date on that?