Never considered one.
Not enough space and storage. Also, we use the tow vehicle a lot for shopping and sight-seeing while camping. And we don't always both want to go to aforementioned shopping or sight-seeing trip. Sometimes one of us stays at camp and relaxes. What a pain it would be to unhook all the hookups just to go into town. Or how inconvenient it would be if one of us went somewhere and left the other one with no food or personal items.
To each his own.
I volunteer to do listed duties. I have never volunteered to watch the rangers or full time employees. That was not and never has been part of the job description.
I try to keep my hours to the required amount, but I have a low boredom threshold and will seek something to do.
I am trying to say--
Do your job to the best of your ability. Do NOT worry about some one else and how they are doing their job. Do not think that workamping is a career position.
Do not take the wheels off your RV.
I think this hits the nail on the head.
We use cell phones for communication between driver and spotter. I'm the spotter, but as a veteran horse-trailer-backer I'm well aware that if I can't see the driver's face in the mirror, he can't see me. But sprinting back and forth from side to side as the trailer maneuvers into position, or having to put myself in mirror-friendly position where I couldn't see the back, or other side, of the trailer, finally convinced us to go to a better form of communication than hand signals. I've seen people using radios, too, but just being able to talk to the driver frees him up to look all around at whatever he needs to be watching.
For me, backing successfully into any space is directly proportional to the audience. I'll put that horse trailer on a dime if no one is around, but it takes 15 stabs at it if the whole barn is watching. :)