I eat quorn and have not had a problem with it. Although everyone is obviously different. Again I'm sure everything in the world is a potential allergen to somebody.
I eat quorn also, not as I want to have the taste of meat in my mouth as if "i missed it" or something. I in fact think quorn doesn't taste anything like meat at all (from what I remember) the consistancy is completely different also, and much nicer! (in my opinion). I like quorn because it's a healthy easy meal to cook, and it is low in fat. In fact alot of omni's move onto quorn if they are on a diet as it it really low in fat. Before I was veggie I actually would choose quorn over a meat product as for one, I never liked meat much at all in the first place, and two because it's a healthy meal to eat. But now I do not relate quorn to meat at all I eat it because I like it. What I do not like is why the quorn brand really really really attempt to make quorn look "meaty" and name their things such as fillets, escalopes, (they have burgers that look incredibly like beefburgers! and that's wrong), ... etc. I think the quorn product has the potential to be even better, by leaving it the way it is... and by not putting loads of colourings and coatings all over it, and adding lots of different flavours to it to make it more "meaty" I personally think the quorn people really have ruined their own product, and they are excluding a big area of the Veggie market by doing such.
I actually need to get a more varied diet, so I'm reading the receipies on this board for some tips.
Another tip on the quorn thing ---- it's really a veggie convenience food, so don't get addicted to it or relay on it as your main food alll the time. Plus is really expensive!