J.D.
I would go for it no matter how the mom's react. My husband also works nights, and picks up the kids from school and is very involved in their sports activites, since I don't get off work until 5-5:30. My kids and I are truly blessed to have such a hands on Dad. If anything, the other mom's should be jealous that their husband's don't spend as much time with their kids as you do.
Jen D.-Frisco