Over-check VS. Side-check?

Hi all!
I was looking for every ones opinions or information on the over-check vs. side-check when driving a miniature.

Wondering if it just for appearance, or are there actual differences between the end results from one or the other?

I would greatly appreciate any input and information you would care to share!

(I don't typically show much, so this is mainly just for pleasure driving, if that makes a difference?)

Thanks!

I was told side checks are best (and one reason given was because it was easier to switch a side check to an over check then the other way around), and I have two harnesses on w/ each, can't see much difference so not sure I'm any help. But I also know of alot of mini people that don't like using them at all.