Given Cheggers already pulled out with injury I doubt there is now another reserve in the line up if he has to withdraw.
Overall I think this year's line up is good, much better than last year's and thankfully no wags, wannabees or famous for being famous types.
I have looked at the clips on the website - I'm not sure these tell us too much as they are brief and think they were shot early on in training but those that looked quite good to me were Matthew, Jorgie, Chemmy, Sebastien & Andy A. I think we'll only be able to tell properly who's good though is when we see them doing full routines.