It’s not an entirely novel concept. I used a similar design, the Microsoft Natural Ergonomic 4000 for quite some time, as well as the Sculpt. It’s better for wrists than a flat keyboard without a doubt, and it helped my wrist pain. I do think that a good mouse may be just as important as a tented keyboard though. Assuming you’re a decent touch typist, you learn quite quickly which characters you’ve been using the wrong hands for.
However, I’ve more recently been using a fully split keyboard (Kinesis Freestyle 2) and, for me, the additional width makes a positive difference - especially in the shoulders. There’s less pressure on the wrists as well, as the individual portions can be angled to meet the hands so the only wrist tension is vertical (which can me addressed with the tenting kit that I do not have). There are better keyboards in the split style, I’m sure.