Cam button / stock timing chain cover

Been dragging my feet a bit on this one. When I step forward I plan on doing the AREngineering cover. Waved by to budget build when I decided solid roller. Might as well keep going.
The cover looks good. Should be less prone to leak. For me I would feel better about my measurements.
I wonder about the nylon button versus bearing with this option though?
Kinda thinking nylon? Less potential for failed bearing pieces in engine?
How often do cam buttons have to be checked? This could also be a consideration to modifying stock steel or buying the aluminum one?