It seems that the Buildbotics firmware is built around metric units, and the inch mode just converts things to inches.
This provides a lot of functionallity in inches, but also results in the issues below:
1) The controller resolving to 0.001", which is rather limiting. It would be much better if it would resolve to 0.0001" or less
2) I've run into issues with false overtravel errors seemingly due to rounding errors converting between metric and inches.
I think something like a seperate inch version of the planner and jog window would fix these issues.