Most people who I've told (or have been told) almost always almost give an anti-reaction - which is to say, they say "hmm", and carry on with the rest of the converstation. My feeling is that people are so self-absorbed, that ulitimately, they could care less about your grooming habits (which, if we were talking about lesser arts/products might make sense - no one gets all interested in street discussions about deordorant...).
Most of the people I know are convenience type people and probably can't imagine why you would waste so much time learning something that a turnip can accomplish in 30 seconds a with disposable. For me, it's been a monastic endeavor - few people beside my wife and kids have seen me actually do it, but I am pleased that my family thinks it's wonderful and my brother will be learning the art from me this Christmas. I welcome the chance to "showboat" some, but I will wait until there is an "organic" opportunity. In the meantime, it's just me once a day, in the bathroom, thinking about doing a good job and learning as much as I can.
Julian