It should be easy for them to do a toggle.
I am playing with controller, and depending on how much you push the walking stick, you either slow walk, fast walk or run. It is not the best option since if you wish to slow walk for 5 min., your thumb gets sore for keeping the stick in this "unnatural" position.
But the speeds are there, so a toggle just needs a button/slider

I would like one - also for controller