Wouldn't walking around in bare feet leave more evidence than wearing shoes, like feet prints, skin cells, hair from feet?
Have they discounted the fibers being found in other homes? If the same fiber is found in everyone's home, just being found in his may mean nothing. Did they rule every other possibility out?
He was barefoot when bringing in his first load of stuff to the drycleaners. That is the testimony----not referring to him being barefoot at any other time.