Its almost as effective, much cheaper, faster, zero risk of infection, and easier to reverse to just stick a magnet in the end of a latex/nitrile/whatever glove and wear it for awhile.
I'd strongly encourage trying it. Been there done that. The glove thing, not the implant thing. Cheap and fun. You will "stick" yourself to chunks of steel and much simpler to fix that with a glove. It gets boring/annoying after a couple hours, at which point you're pretty happy to peel off the glove; I imagine implants are less convenient.
And its magnetic fields not electrical. Over a couple hundred volts/cm you can feel electrical fields without any implants or whatever, assuming you have arm hair. I'm talking about something distinct from feeling current flow, a totally different scenario.
You can feel CHANGING magnetic fields if they're immense, like in a MRI.
