Any pics of the install process going the rocker panel route?
No, sorry. It is ridiculously easy though. I think it's easier than through the headliner and it leaves less extra cable to have to do something with.
I put the 90* connector on the rear camera so I started there.
1. Run above C pillar plastic trim at headliner to front and then down to rear rocker. On both F/R rocker covers, they are held in place by a bunch of plastic clips. I used a plastic trim tool to pop them up. It doesn't take much force at all and then they are completely out of the way. I completely removed both rocker trims (ones with inlaid metal - on Limited), the jack cover under front seat. The trim at the bottom of the B pillar just needs to be unsnapped at front and rear leaving you with a little play. The front rocker cover is also part of the F passenger kick cover and it has two large metal clips into the side of the passenger door opening. These pull to the rear to release. Then, once all clips popped out, lift the rear of the F rocker cover up and the kick portion will rotate free of the glove box portion and come out.
2. Run the cable between the plastic wiring race and the outside rubber trim. I lifted up the rubber flap and put it underneath.
3. Insert the straight end of cable at the clear opening at the rear of the B pillar and push through. Move to F door and simply pull cable all the way through.
4. On the front rocker, there is an open channel through the plastic race that you can snake the cable through. Took like 15 seconds to do that. Pull rest cable of cable through.
5. Remove the R end of the dash panel by inserting a plastic trim tool between it and the dash and pop it all off.
6. I then took rest of cable, straightened it, and plugged into the dash cam. Route cable in headliner from cam to A pillar. Route above plastic A pillar trim, under headliner around to the door opening.
7. Run the cable under the rubber door trim flap down to end of dash opening.
8. I had ~ 10" of extra cable which I made one loop inside the dash end opening. Simply lay the rest of the cable in flush, out of the way places and replace all of your trim by just lining up the clips and snapping back into place. Done.