No idea, though I do use a rod length of leader and snaps (for ease of changing) I would imagine any benefit (if any) in lure action from using braid would be eaten up and then some from using a snap, but still manage to get fish so I've never had a problem. Most of my trolling has been done with the rod with fireline and it has performed very well for me.
I should mention the not ALL my rigs have braid, I do have a 24kg setup used for both bottom bashing and trolling that has 50lb Platypus pretest mono. Though i haven't done much trolling with this, I haven't raised a fish doing so.