Been experimenting with the vertical meter and would comment as follows:
Seems to be very smooth and will work for those that like the 'up/down' look as opposed to the 'left/right' look.
HOWEVER, I do not like the way that it does not retain it's position on the screen. Each club has the meter in a different position and, being in the middle, it blocks some of the shot views.
Solution: position the meter on the left side of the screen and keep it there permanently.