I shoot a lot of 3D with horizontal pin sights and "Gap" pins on odd yardages......shooting the air or space between the pins is quite accurate.

I liked the idea of less target coverage overall soa couple of years ago I tried a Trophy Ridge Matrix and simply HATED it. I just could not get used to not seeing between those pins.
I do like a single vertical pin that you would find in a moveable slider style sight, but the vertical stack of pins drove me nuts.

Some people like them a lot, but others like me are just the opposite.
This is one that it will definitely pay to ask a shop if you can try both styles out side by side to see what your preference is.