Invisible Electric Fence for Dogs - Would you?

What's already been said: A Doberman really doesn't want to leave home. They are absolute home-bodies. If you have a 4 foot fence and you are in the yard with them I absolutely can't imagine one bailing out. I certainly wouldn't leave one out without being home, but for hanging out I think it would be fine.

You never met Mr. Spock (see my avatar). :D

He'd get away any chance he could. Maybe it was bad training, but... We'd always have to ensure the gates in our backyard chain link fence were closed and locked. Which was often problematic as the garbage folks would often leave the gates open. We ended up leaving the trash cans outside the fence.