If I remember correctly, Mike uses a very high anchor, which means he will have to elevate his bow hand a bit even on short shots. Because of this, it might be feasible for him to touch his chin to his bow arm shoulder, but it might not work for you. I would think that it would cause some unneeded muscle tension. Most good shots have their own little quirks that work great for them, but don't necessarily work for everyone else. You need to try it and see how it works for you. If it doesn't feel comfortable, don't do it.