My husband has rare blood and is the one that is most needed O negative, universal blood. He also gives double reds and plasma all year long. He constantly gets calls for donation. He goes.
If they say gays can donate without year wait; I am going to tell him he needs to call American Red Cross and tell them he will refuse to donate anymore blood.
Your husband is a great man for donating blood. I agree, type O negative is extremely rare. My GF is a nurse and they treat this type as a celebrity.