My studio sits above a three car garage and I practically live up there. I do share this idealistic space with my husband who does stained glass.
Your studio looks amazing, all that cabinetry and storage would allow you to be quite organised. It's good that your husband has not required a much larger share of your studio - that could cause problems !!!!!
Enjoyed being allowed to have a "peek" inside your & your husband's studio. I also share the hobby room with my husband.