I've done it. We used a track kit intended for pocket doors, you might even be able to match the existing wall track system. The door guys installed it and I hung the TV on it. Since the back wasn't visible, I just had them hang a 2'x3' piece of ply, and used a normal locking mount. You could also do a pole mount off a small platform attached to the hangers.

I agree on the manual version, far simpler and more reliable. In an office, someone will inevitably try and push the TV by hand and break the system, even when it's supposed to be able to handle that.

The hard part was dealing with cable management. I used cable carrier chain, I can't remember the exact brand but it was german. Lots of testing and adjusting, but once we had it right it worked very well for years.