Well, I finally installed the Inovelli switch, and can report that it seems like it controls the Nicor SureFits very well. Dimming works down to very low. However, when searching for this thread so I could report back this update, I found this thread, which I had forgotten about:
It seems that for some reason Inovelli does not think the LZ31 is compatible with the Nicor SureFits, so I posted a follow up on that thread also and will hopefully receive a reply over there. I hope I can keep the Inovelli LZ31 installed controlling the SureFit’s - it seems to work great…