- Advantage360 - Pros: Concave key well, wireless, split, proven "real" company, proven ergonomics Cons: not low profile, not available until late 2022, not hotswap
- Glove80 - Pros: Concave key well, wireless, split, low profile switches and caps, ergonomics look excellent Cons: Kickstarter, not available until late 2022, not hotswap, low profile switches & POM caps harder to replace
- Moonlander - Pros: Available now from reputable company, hot swappable switches and caps, split Cons: No concave key well, thumb cluster difficult to reach, ergonomics don't seem as "comfortable". This one seems to be the most direct competitor to the one in OP, though the dygma's thumb cluster seems much closer (good for reachability but might get in the way?).
After eyeing mech keyboards for ~1yr (analysis paralysis...) I decided to back the Glove80 and hope they ship in a reasonable timeframe.
[1] https://kinesis-ergo.com/keyboards/advantage360/ [2] https://www.kickstarter.com/projects/moergo/glove80-the-incr... [3] https://www.zsa.io/moonlander/