It's been a little over a week since the second attempt magnet implantation. After examining the healing wound, we removed the stitch.
I have started to get sensations around stronger fields again. I can once again sense the buzz of AC adapters and electric toothbrushes. Magnetic attraction is much weaker though, presumably due to the deeper placement of the magnet. With the last placement I could easily pick up a large paper clip, but this implant is barely able to lift a small paper clip. This does not bother me at all, as the implant is for sensory enhancement rather than utility.
Things look good for now, and in the next few weeks I should know for sure if the implant has taken.