If you know better why do you ask all those questions? - keep it for yourself Aquaheat.
I know from experience these guys are only interested in quick profit and nothing else - they don't care how the cables are routed as long as it's easy for them.
I haven't asked you a single question. I will now though. What questions?
As an RGI I find your last comment abusive and forum rules do not allow that and will be reported for making derogatory comments about us.
All of my installs have cables their cables done in a manner that the client has specified. If they want them in the wall then they go in the wall, if they want cables on view then that's their choice too.
You have proved my point that your post needed editing to read correctly as any engineer will fit anything exactly how you want it but that comes at a cost. All of my installs would be more aesthetically pleasing to your eye than yours but my install will cost you more hence aesthetics have squat to do with it but cost does.