I’ve done some testing on a Ra2 Select bridge and it works exactly like Caseta Smart Bridge Pro. My custom component works without issue. Waiting for additional items to be installed for more testing.
Ra2 Select also supports occupancy/vacancy sensors now so I may order one of those as well. Judging from the Integration Protocol I think it will be like all the other pico button sensors, but with the equivalent of a button press as occupied and a button release as unoccupied.
The latest software for the bridge also shows the Ra2 Select is coming to Europe on the 868 MHz frequency band. Not sure they have many 240 V dimmers and switches to go with it, but I think they already have the shades.