It's kind of a pain to do it. It could, I suppose, lead you to needing it towed to a shop to have the job completed, I don't know if you call that a disaster. To me, a disaster is the car catches fire, or you screw it up and causes you to have an accident. That's not likely to happen.
One hard part is getting the panel removed under the drivers side of a dash, there are 2 catches hidden under the instrument panel, hard for me to tell you how to release the catches.
Then removing the switch is kind of a puzzle, like most MB ignition switch/lock work. At least the lock stays in the steering jacket, it makes it a little easier. If your not familiar with removing the under dash panel, and/or never done any MB ignition switch or steering lock work, I'd tend to steer you away from doing it.