The issue of risk rating for
insurance coverage has ZERO relationship with electronic cigarettes, so it really doesn't belong on this forum.
But since the issue has been raised, I think it critically important to point out that for many decades virtually all
life insurance companies have charged higher premiums for cigarette smokers (than for nonsmokers) because smokers are more likely to die sooner than nonsmokers.
Similarly, at least here in the US, many healthcare
insurance companies charge higher premiums for smokers (than for nonsmokers) for individual insurance policies (for similar actuarial reasons as life insurers have done), which is commonly referred to as "risk rating". That's the way insurers also determine premiums for homeowners, automobile and other types of insurance, which is why a driver with multiple car accidents pays higher auto insurance premiums than a driver with no car accidents, and why homeowners who have filed multiple claims usually pay higher homeowners' insurance premiums than those who have never filed a claim.
But since the vast majority of health insurance in the US is purchased/provided by employers, insurance companies and employers have traditionally "community rated" these policies (i.e. similar fee for everyone regardless of risks).
While the new healthcare insurance reform legislation in the US continues to allow healthcare insurers to charge higher healthcare insurance premiums for smokers, they are unlikely to do so via employer provided healthcare insurance because the vast majority of employers have decided not to do so.