I eat just about everything - in moderation. Meat, fish, eggs, fruit, veg, potatoes, rice, pasta, chocolate, wine, cake.
I don't eat Quorn. I've tried it and it was ok-ish, but I wouldn't go out of my way to buy it, even though it is a good low fat source of protein. Anyway my husband is coeliac, so he can't eat it, and I don't have time to waste making 2 different meals.
PP that's pretty much the decision I have come to.
It isn't really about the weight of the shoes though, I just feel as if I run better-slightly more forefoot in the rc1600.
During the race I got some pain from the front of my sole but ran through that and it cleared after about 6 miles (as my pace increased), the most worrying pain's are from the end of my two middle toes, and from a hot spot on the ball of my foot, these pains started at 8 miles or so and were pretty bad at the end-not slowing me down but may have done on a longer race.
There's your answer. Run in the trail shoes for the marathon, work on your gait afterwards. It's too late to change in time.