One way you might be able to perform your own test of sorts, although not very scientific, and certainly not very orthodox, is to join a forum that involves people who handle venomous animals and ask them to test it out for you. Just give them the criteria for the study and ask that IF anyone gets bitten, they try it out while waiting for real medical assistance. I would stress that it is not a substite for medical treatment, but you are interested in finding out the immediate after effects of a shock treatment for various bites. I'm tempted to try it out the next time I get bitten by something. I don't handle anything deadly much anymore so it's unlikely that I would die from anything I might handle at the moment. As I said, the results might not be exactly scientific, but they will be a good estimate of whether it works or not as the people in these types of forums often have bite reports and they are more likely to get bitten than most.

I am a member of a forum for tarantulas and other venomous invertebrates and they frequently get bitten. I might post it there and see what the consensus is. They may already have a post on it somewhere. I'll check and see.