As well as pedals (see Pedals) it should be possible to extend versor to use other input devices, such as joysticks and mouthswitches.
For commands suitable for use with very “narrow-channel” input devices, Reversing.
A complex joystick (at least with twist as well as X and Y movements) could prove to be an excellent way to use versor. The main stick movements could be the main versor movements, and a side twist could either change dimensions or do alterations. Alternatively, a Fire button could switch the main co-ordinates between movement and alterations. Some joysticks have a smaller joystick mounted on the main joystick; that would be another way to access alterations or dimension changes. A button on the side of the joystick could also change the main movements between navigating the buffer and navigating the space of coordinates.