Simple truth is, I like the look of the crown, but I hate making them. It's a two part procedure, creating the actual bridge, then the crown portion. Now that we have a laser, it's a little easier, but still more work than a single piece. The old crown bridges were single piece, including the crown, which was even worse.
I designed the bowtie for simplicity in looks and shaping. Unfortunately, it's not much easier to make than the crown, but it is easier to mask off before spraying.