I'll put it this way. If you have a smn and want to use one, that's fine, but that doesn't make it a good job or one that is preferable to use.
It's plain that simple. If you want to use it because the person in your group has most fun on the job, that's one thing, but something like "I want a smn in this pt because of how great they are and how much they add to this party" is another.
