I'm also tentatively an advocate for e cigs; with just water vapor and nicotine, the carcinogens from tobacco are gone, but the addiction to the nicotine is being serviced. Obviously there are some unknowns about them right now, but I have always been a big advocate of harm reduction if you can't get rid of the actual harm. ( Good harm reduction would be programs like needle exchange programs for addicts and methadone programs). So this would, for him in this situation, be a suitable alternative that would deal with the addiction which is the driver here. Most smokers feel guilty about their situation and are physically unable to quit. It is not always something that can be dealt with through some of the programs that people will recommend.
Patches, gums, etc. that deliver nicotine only work in about 7% of the people that try them ( a dirty little secret) because the FDA will not allow an adequate dosage of nicotine to be put into an over the counter device.
e cigarettes are available all over the internet. I get ads for them in my mail box every day.