I think that this is a little better that only smoking, but from my experience, combining vaping and smoking is not good. I did it too, for about one year, and looking back, was a mistake. Not good for my health.
And about vaping. It would be a good field of research for a doctor, to make a comparative study between smoking and vaping. Only if cigarettes industry would not be a 1 trillion dollar monster. Which also brings a big some of money in the state pocket.
And about iQuos, or whatever name they had in our market those ''non burning'' ... something. Total junk.