Just to clarify - In order to get barrel rotation date in to ArtRage the tablet and pen must both support barrel rotation.
Barrel rotation in particular is an uncommon feature and even most pens that support tilt won't support it. Unfortunately there are so many tablets out there, and they change so frequently, that we're not able to maintain a list showing this. Because the features depend entirely on the hardware you would need to check with the hardware vendor to see if they provide the barrel rotation information.