Almost ALL vape fluid contains nicotine and they are available for most any vape. They are also much more detrimental to one's health than smoking a cigarette. How would a vape 'designed for tobacco users' be any different than others?
At some point all cruise will be 100% smoke free. It will not be tomorrow, next week, or next year, but at some point it will happen just as it has happened in many states for bars, etc. I hope it is sooner rather than later.