I have to politely disagree. I actually think it could be important to finding him. According to the VI, he only wore them at night. Also, we're focusing on Friday-Saturday. This leads us to believe that he disappeared the night before. The lack of crime scene tape at the house makes me suspect that it, well, wasn't a crime scene. So he quite possibly died somewhere else, at night. So now we're looking at maybe her sleeping over at someone's house, or at least staying there so late that she put the kids to bed there. Where would she go to maybe party? It WAS a Friday night, afterall. If it wasn't February, I would say maybe an outdoor area and they could've slept in the car. But in winter, maybe someone else's house. Then I wonder who her friends are... and I start thinking that maybe since she grew up in Andover and maybe knows more people there, maybe that's the key.
I'm just rambling now, but my point is, I think it could be a very important clue to actually finding him.