It usually represents a nasty turn towards elitist conservatism common among newly rich social climbers. Evangelical converts are more likely to be zealous authoritarians than cultural Catholics.
Can you post an example of this actually happening? "Church-shopping" is a foreign concept to the European posters here, in no small part because the US never had a state church and so American Christians are more open to exploring different denominations, but I don't know anyone particularly adverse to the idea.
