This is more out of curiosity than anything as it's not causing us any problems (apart from when it comes to finding the missing shoe the next morning )
When ds1 gets home he always takes the sock and shoe from one foot off and will happily potter around the house like that for a couple of hours before removing the other shoe. It's not always the same foot each time and he does it no matter what shoes or trainers he's been wearing.
I'm not even sure whether it's related to his ASD but just wondered if anyone else had any ideas/experience.