Add an option in the render settings, enabled by default, to treat every object in IPR as if they had the "Reshapable Proxy" geometry type.
Different Geometry types only make sens for final rendering, not IPR. This feature would make feel Octane for maya more interactive out of the box, like the other plugins.
* EDITED:
After reflection and discussion with Jolbertoquini, better to implement this feature this way :
Add this option somewhere :
"OVERRIDE GEOMETRY TYPE FOR IPR :"
with these entries: " NONE , GLOBAL, SCATTER, MOVABLE PROXY, RESHAPABLE PROXY" and the default would be "NONE".