I have an Old Man Mountain front rack (second hand, courtesy of a forumite) fitted to my Reasonably Priced Mountain Bicycle via the QR skewer and P-clips (I bought some new ones that are exactly the right diameter for the fork). Alas, circumstances have dictated that the bike itself has been gathering dust and getting in the way of the gas meter since I fitted it, so I've not actually tested it in the real world, and haven't a clue how the bike handles with a load on the front. It does look ridiculous with the keeps-the worst-of-the-mud-out-of-your-face 'dirt board' mudguard attached.
That said, it's as sturdy as the price suggests, and should be admirably suited for the intended task of cycle-camping with a side-order of Sensible Off-Roading.