These are great ideas, but I thought there was always a barrier that prevented them from being created or released or whatever. I thought that Visa and/or Mastercard didn't want to provide this kind of service. Obviously I could be mistaken since it sounds like they do exist. Anyway, I wouldn't want one myself since I don't like to spend bitcoin and would probably end up with no bitcoins whatsoever if I had a debit card.
Don't any of you worry about that, that you'll spend all your bitcoins if you can spend them so easily? I guess I'm just a hodler at heart and I don't like watching my btc balance go to zero.