For me, continuing to smoke while vaping would probably lead to a renewed desire to smoke again. Once I got rid of the smokes I never wanted another one. I did smoke a few a day while I was learning about vaping. One day I realized that since vaping I had gone from 2 PAD down to several cigs a day and I could probably quit smoking completely. I finished my last pack and didn't buy anymore. That was easy as long as I had my vape. My last smoke was in 2010 and I haven't wanted a cigarette since then. I don't even think about it.
Me too, exactly like that. Like a baby bird in the nest, not yet fledged, I vaped while smoking, then smoked while vaping, just learning the ins and outs of vaping, the options for procurement, equipment, flavors, for carrying it outside the home, packing it, vaping in public, all the while using both crutches. The day came when I loved vaping and did not want to be a smoker any more. I flew out of the nest, never looked back, never had another cigarette from that day to this. My flight date was the Saturday after Thanksgiving in 2012. I woke up the next day knowing I was a nonsmoker. I still very often feel it's a miracle to wake up as a nonsmoker.