it only limits articulation if you don't have the room to mount a long enough shock vertically. which is the reason why people mount them angled.
however, the more you angle the shock the less efficient they become.
![Yes Nod :yesnod:](https://board.marlincrawler.com/Smileys/marlin/yesnod.gif)
I wish I could have mounted mine straight up and down but I did'nt have the room