I had a question from a potential emando buyer about string trees on emando headstocks. Not every maker uses them, but you'll find them on Blue Stars, Schwabs, and most Fenders.
Potential buyer was concerned that using the string tree introduces a couple of extra angles into what should ideally be a straight line: namely, the string's path from nut to tuner. But if you try to skip the string tree, the string slips out of the nut slot, or worse.
Has anyone experienced problems with string breakage, intonation, etc., that were traceable to the use of a string tree? I've never regarded or experienced them as troublesome, myself.