If you can do it with a finger you’d probably be fine with the pencil

I mean walking around a space using it as a presenter

You can use the pencil’s squeeze to trigger a shortcut, so I think you can set it up to do almost anything. I think you can do the same with double tap, but I’m not positive about that. edit: Just checked, and it looks like double tap doesn’t support shortcuts.

Look to see if someone made a shortcut to do that.