I personally like the idea of having a back on the bench, it makes us more flexible in case of injuries and as was pointed out earlier in the thread, we are fortunate enough to have an 80 minute hooker who doesnt need spelling so therefore we can get away with it and still give TP, Graham, LMS, Clough and Sia the appropriate spells during a game.
Also, for such as Saturday, if Leon has recovered he would be well worth a place on the bench for me. Lomax and Gaskell have been superb all season, but if the occasion of a GF got the better of them ,we have an experienced half that can come on the field and steady the ship which should be reassuring for all.