Stalled as I got busy with things in life getting in the way and other projects for the plugin. Have a few things that I need to fix with it before I would consider it even being worth finishing. I’m not in the business of IK work, I just wanted to experiment with that particular paper and it was novel, it has some draw backs that would need solved before being used in any sort of generic way.
I wouldn’t put an ik solution in the plugin at all unless it was better on average than other full package offerings, better to let the dedicated IK guys handle it if that isn’t the case.