If you decide to do this, be sure to get it removed prior to the silicone rupturing and act with some urgency if you think it has. I enjoyed my magnetic implant for the time I had it but it did feel like a lil ticking timebomb after a few years.
Mine is coated in Schott 8625 bioglass, rather than silicone. This should help it hold up for a bit longer, and also makes it a bit easier to get it out should need be. I'll definitely be taking swift action should I notice something going awry.