On an article in The Age, an Australian newspaper:
Mr Belling recently put his old running shoes back on and said they felt like a pair of gumboots. He missed the ”dexterity, balance, and stability control” of his barefoot shoes, and doing exercise felt like ”trying to solve a Rubik’s cube wearing a pair of welding gloves”.
I can see that happening. I imagine your body gets used to not having the extra weight, so when you put them back on, even the lightest of running shoes would fill heavy.