Based on my research reading suggesting that some people can be "blind" to their own odors (I posted a link on a related thread but can't put it to hand right now), I continue to use conventional antiperspirants in social situations (e.g. work) and soap/shampoo when bathing. I use a crystal deodorant for yoga class and nothing before heavy exercise.
I have foregone shampoo at times and was unimpressed with the results.
EDIT: here's reportage in the popular press in 2007 of the research. Some people can't smell their own androstenone: http://www.sciencedaily.com/releases/2007/09/070916143523.htm and here: http://www.sciencedaily.com/releases/2007/10/071030080645.htm