I have a good bit of experience with the xhosa and calea but never really approached tobacco with the aim of lucid dreaming.  Haven't really ever heard it mentioned as useful for that purpose that I recall to be perfectly honest.

However, I had a hospital stay awhile back and for some reason they dont let you smoke in there. but they will give you nicotiene patches.  I think it was the second or third night where I had a very lucid/vivid dream.  One of those ones that is hard to get out of and wake up, sometimes dreams can be so lucid you can't wake up from them no matter how hard you try.

I happened to mention it to the guy who was watching over me, a younger guy and he said it was probably because I was sleeping with that patch on and getting a constant stream of nicotiene while I was sleeping.  I kind of shrugged it off, thinking it was because of other reasons but seeing this thread Im thinking he had a point.

We chatted and he mentioned he had some friends that explored the lucid dreaming thing, but that he never had, but he had a sort of younger more open mind to him that I dont usually pick up from older doctors.