"It promises Bambu Lab's features in a bigger box for less money, a classic high-risk, high-reward proposition."
The 600mm/s speed is a maximum velocity, typically used for infill or travel, not for the detailed outer surfaces of your print. Overall print times will be fast, but achieving maximum advertised quality requires running it slower.
This is for an experienced hobbyist who needs a large build volume and multi-color capability, and is willing to troubleshoot a first-generation product to get it at this price point. The spec-sheet value is high for those who understand the potential teething issues.
Anyone running a print farm or requiring appliance-like reliability for a business should wait for six months of user reviews. If your parts fit in a 256mm cube, a more mature ecosystem from a competitor offers a less speculative purchase.