Having slept on this, i've decided i'm quite happy with McKay. It gives us actual competition for places in the wide positions, which means that at least one of him, Anderson, Scott, Vaughan or Conroy jus going have to miss out each week, which should in theory up their performance levels and give us a better output. Given that Conroy and Vaughan have been amongst our most productive players recently, it's harsh to drop either of them. I imagine McKay will start most games from the bench barring injury or suspension, but he's very obviously quick and likes a 1-on-1 so isn't the worst option to have for the last 15 of a game.