I find it very interesting that Ryanair is actually selling them or plans to sell them in-flight.

Having said that, on my last trip to SYD I discovered that Nicotrol Inhalers were sold OTC there and picked some up. They are not as gratifying as my E-cigs but do not cause a stir in-flight.

I normally use Oliver Twist chewing tobacco. It is spit-less and pleasant.