My goodness... The way you are describing your husband sounds like the classic male (Non-Hyper) ADD. I could almost check-off every behavior you describe on a list with my name on it. If he has been DX'd with BP, it is worth looking into ADD. There are Many similarities.

My doc suspected BP, so he refered my to a psychiatrist who ruled out BP and quickly suggested ADD. I was 43 and had No Idea...