While using a controller with an inverted Y configuration, the belt radial menu (accessed by holding down LB) is also inverted - which makes navigating it very confusing/frustrating.
On a side note, I do hope controller remapping is on the table for the future! Fantastic game
Cheers
*EDIT: I'm not awake yet, just realized this isn't the official forum / no devs / etc. I'll post this on steam. In the meantime perhaps this bug report will help someone having similar issues