I think that ESAs with appropriate public access training should be permitted to be used just the same as task-trained service animals. I think it should be that way, but know for a certainty that it is not.
I understand just how much security a person can derive from an ESA.
I also know what can happen to a person with an ESA who winds up on the wrong end of a SD law. It's horrible. I've actually seen it happen with someone completely well-meaning who thought they were doing the right thing. You start with a person who is already emotionally fragile and then blast them for making an honest mistake, and they may never recover from it.
The stigma and open hostility perpetrated by the general population upon those considered to be mentally defective is as destructive as it is disgusting. Trying to reason that a person who is mentally ill might not able to stand up to an onslaught like that any more than a person with no legs can carry a child out of a fire just doesn't penetrate.
Well I see I'm headed for a rant.
Ultimately my concern in this discussion has always been for your mental safety.
Back to public access ESAs. Unfortunately, I think it is unlikely that they will be accepted in the next ten years. We're having enough trouble getting PSDs firmly accepted. Just five years ago ADI was absolutely rabid against them. They're just starting to come around, but the battle is not yet over.
Amanda, have you considered that with a severe mental disability it is extremely likely that there is at least one task that a dog might be trained to do that actually be helpful in mitigating your illness? I'd, frankly, be shocked if there wasn't some task, somewhere that you actually need but you haven't yet recognized that it can be of benefit to you.
I don't know if you've looked over the article collection on PSDs on this site or not. It starts on this page:
http://servicedogcentral.org/content/node/74 It includes some solid strategies for identifying what sorts of tasks might be needed.
Task training is the easiest part of training a service dog. I know it doesn't seem it should be that way, but it really is. If you have a well-behaved dog with some task training, you have a foot in the door toward service-dog-dom. Even if it turns out you aren't able to complete the full training, at least you would have a task or two that is helpful at home. Besides, training is fun!