But you have to use a flat and especially "short" bracket. Some temples are so massive (so high) and long (measured from the end of the collar) that it is difficult to fold the suit and stow halfway flat.
Place has the garment bag for a set, with squeezing you may get purely a 2nd suit jacket, but made sure he is not likely.
Conclusion: The garment bag works great if you have found the right bracket for use.