I'm curious about the purpose of sawarisuwari-waza practice, the Aikido technique sometimes described as "knee walking", although I'm aware that the two are different.
I know some styles like Hapkido and wrestling use it, although it is performed very differently than I see in Aikido. I occasionally see its use in grappling, but no where it seems more widely practiced than in Aikido, where eventually all techniques are performed while in this position.
Does your style use sawarisuwari-waza or knee walking techniques? What are you told about its benefits, purpose, and method of performing it? Any tips you might offer to help someone suffering from ankle, knee, or ball of toes fatigue and pain because of it?