I am on the Subutex generic, it is still around. I find it odd that doctors will not write you a prescription for it since you do not have the option of taking Suboxone. My doctor did not give me any issues with switching, but I am in New Jersey so that is not much help to you.
Do you have documentation that you are allergic to Naloxone? Maybe when you call state that you can prove that you are allergic (I'm sure doctors get people saying a lot and have become untrusting).
My only advice is to get a long list of doctors that you can travel to and call all of them. Sometimes saying something like "So because I am allergic to Naloxone means that you are unwilling to help treat me. I am reaching out for HELP and am trying to save my life and you are going to punish me for an allergy I cannot control?!"
That might seem dramatic, but sometimes it is what it takes.
Good Luck
Yelliee