You might also want to look into hubby's eligiblity for Medicare. I assume you need to pay 40 years SS in the US to qualify so that may be out--but would he qualify as your spouse?
If you find any of this out, do let us know, as I'm sure others will be interested just as much as I am.
Per my Social Security statement ... You earn 1 credit for every $900 you earn a year. You can earn upto 4 credits a year. You need 40 credits to claim Medicare. You also need to be 65 years old.
When my husband would come over before we were married and in the weeks leading upto the marriage, he went without health insurance. He has traveling sports coverage that would have covered a major accident (and they would have transported him back to the UK as soon as he was stable enough). He showed up at the airport one visit with Montezuma's Revenge (don't eat uncooked veggies in Mexico City). We went to the local clinic and paid for the visit. We asked for genaric antibiotics since he'd be paying the whole price, they gave him samples for the whole course. Very nice of them.
As soon as we were married, I had him put on my insurance. They covered him immedietly even though he didn't have his green card yet.
On the flip side, on our last visit to the UK, I got a chest infection. We shelled out ₤30 for the visit and another ₤3 for the antibiotics. I wasn't bothered about this. Had I gotten travel insurance, it wouldn't have covered something this minor. They did give me paperwork to file with my insurance back in the states, but the hassle wasn't worth the $50 I'd eventually get back.
But even if you don't have insurance, you will never be denied emergency treatment. The government give hospitals some money (not enough) each year to cover health care of the uninsured. Just be sure to bring enough routine stuff, ie birth control pills and such, to last until your health coverage kicks in.