So after having a little time to assemble and inspect it, here are my first impressions.
The saw top is not pressed steel, but some kind of cast, non-ferrous metal. As previously mentioned the powder coating was not perfect, but turned out to be easy enough to scrape down the bumps. Even after this the table is not perfectly flat; at the front and back edges it is near perfect, but around the slot for the insert there are areas where it is slightly (less than 1 mm) higher compared to the outside edges.
The extensions are pressed steel and are awful. Not flat, near impossible to level with the table. The outfeed extension does not continue the mitre slots, which would make using a crosscut sled impossible. I'll remove the left side and outfeed extensions over the weekend, but may keep the right side extension for the moment for the extra width capacity.
The mitre gauge is currently useless, with way too much slop in the slot. I can probably rescue it by punching the bar to widen it, but I might just make a replacement bar that fits instead.
The fence is passable. It locks securely, and reliably; when attached securely it takes a fair amount of force before it starts to deflect.
Out of the box the alignment is definitely off. I can't tell for sure how far off (yet) as I was referencing off the badly fitting mitre gauge, but my DTI showed a difference of around 0.5mm between front and back of the blade. Fettling this is going to be annoying as getting to the necessary bolts for adjustment are awkward to get to, but once done it hopefully won't need to be done again.
The splitter is awkward to attach, and the attached laser guide seems like a gimmick I'll probably never use. The laser can at least be adjusted as out of the box it was a good 10 degrees off alignment with the blade. The blade guard attaches to the splitter at a pivot point that seems slightly too low, meaning the blade needs to be a few mm higher than I would set by choice for the wood to pass through without fouling on the guard. At some point I'll likely fabricate a riving knife to replace the splitter/guard assembly.
The saw is loud as I expected, but my few test cuts were cleaner than I expected even with the 24 tooth blade that came with it. Overall I'm pretty happy with what I got for the price.