It would seem as if an EpiPen is safe for use by the layman however you need to be able to recognise the symptoms of an allergic reaction. If not you will be smacking yourself with adrenaline at a time when you are supposed to be keeping calm.
I am sure that in the correct situation it will be a life saver but realistically the chances that you will show an allergic reaction to the venom is fairly small.
Being a minority statistic makes you just as dead as if you are the norm and things go wrong.
It makes sense to know what the experience is going to entail so that any deviations can be reported and treated.