I have a Warn M8000 mounted on the front of my Toyota with a hitch setup on a custom bumper. They can be built plenty strong enough, I dont think that should be a concern but rather the approach angle and lack of protection for the winch itself is my main concern.
All in all, it is a great setup and easy to remove, and switch to the rear - as long as you have the winch wiring setup to run front and rear that is.
I've done some crazy sideways pulls and up waterfalls, never with a problem. My next setup on the truck will be integrated however, I have run into a few circumstances on the trail where I have had to take a more angled approach up obstacles because the winch does protrude out with the hitch setup. My truck is not an expedition vehicle however :elkgrin:
I could see the hitch setup being more practical on an expedition vehicle, allowing rear winching, removing it all together and storing in the bed on a mount (that is what I did when I was not on the trail).