When using Cable Manager I've noticed that the Visualization tool only displays a preview of where that wire exists. Is it possible to display these wiring routes in a more permanent fashion?
Yes, the cables created via Cable Manager are data-oriented vs. graphics, so the Visualization option is intended only as a temporary representation. You can place permanent geometry using the "Place Circuit Lines, Switch Lines, Homeruns" tools, though that of course would be a separate operation.
Note: Enhancement # 20135 has been filed requesting the ability to place circuit geometry directly from Cable Manager.