Back in the late 90s, when I first got a cable modem from Rogers, they needed to run the coax from one end of my condo, where the cable came in (the wall between my living room & master bedroom), to the other end, where my "office" is. The first guy who showed up wanted to staple the cable along the baseboards, around door frames etc. I refused. They then sent a 2 man crew who fished the wire up a wall, alongside air ducts, over the bathroom ceiling, into the laundry room, down the wall and through it into the closet in my office. They did a very nice job, with the cable only showing in the laundry room and the office closed. They even patched the holes in the drywall they made to fish the cable. I also had them pull in 2 runs of CAT5, so I could extend my network to my living room & master bedroom. As I said, a very nice job.
So, if you think an installer is going to do a lousy job, refuse it and have them send someone else to do a proper job.
BTW, several years ago, Cogeco stapled the black coax right down the middle of my sister's living room wall, ignoring the fact that staples don't hold well in drywall!
I haven't lost my mind. It's around here...somewhere...