Is there any way to limit the available screen rotations?

Like every SFOS device I've had, the rotation options from the UI are horizontal, vertical or auto.

Very minor problem is the grand scheme, but one minor annoyance I've had with the Pro1 is there isn't much in the way of visual cues of the physical orientation when picking it up. A number of times I've answered the phone, only to find I'm holding it upside down. Obviously I could turn of rotation, but that makes using the keyboard a bit of a faff.

If it were possible to limit available rotations to 0deg and 90deg, it might be a useful hack. Alternatively turn off the rotation, except when the keyboard is open? In fact, that might be a better option for me.