I really don't think you can predict the sound of a speaker based on the type of tweeter used. There are just too many variables in the design. The type of enclosure, the crossover, the placement of the tweeter in the cabinet and other variables make it impossible to know what the speaker will sound like without listening. For example, I've seen many people say that metal-dome tweeters are harsh, but Harbeth uses metal dome tweeters in its HL5s, which could never be called harsh.
Don't get hung up on this. Find a speaker you like and listen to it. Don't worry about the driver types.
Don't get hung up on this. Find a speaker you like and listen to it. Don't worry about the driver types.