I had the permanent device implanted last November, so I've had it nearly four months. It's been nothing short of amazing for me. My overactive bladder is very nearly normal now, and I've only had one accident since the surgery.
I haven't worn diapers since late December, and most days I have no bouts of urgency. When I do have occasional urgency, I'm able to wait through it, then get to the restroom once it passes.
I hope it works for you as well as it's worked for me! Not everybody has this good of results, but some do.