Ever heard the Jesus Jones version of Keep The Faith? It wasn't a collaboration as such, but very much done with Jon's blessing (ah well, eventually never released cause he didn't like it, but, I guess he was open for that kind of music for a while...)

I'm quite curious too tbh. At this point in Jon Bon's career he's so over the hill musically speaking that anything even remotely related to music creation is a step forward for him [not to mention that I've got over the METAL or NOTHING phase of life a while ago...]