In the meantime, I’ve had some great success breaking apart the equi-rectangular image into 6 flat images (think six sides of a cube).
I’ve used a tool that comes with 3DF Zephr Lite (trial version). It’s in the Utilities > Images > Decompose equirectangular panoramas menu.
Hope this helps some of you until Reality Capture has some tools of it’s own to handle these images.