I have the RX 810 and they were decent.
I recently upgraded to the Shinto s-phyre RX-910 and it’s a vastly superior shoes. I’d rate the 810 a 6.5/10 and the 910 a 9.5/10.
It has a new(ish?) pontoon system around the spd cleat that gives you a sturdier and broader platform. The upper part of the shoe is softer with much better adjustments for tightening.
Aside from bent expensive, I’d consider this to be the most road-oriented gravel specific shoe. I liked it so much I bought a second set of the MX mountain bike version for mountain biking or gravel rides where I may spend more time hike-a-biking.