Has anyone tried Mark Sommerfeld's new tongue and groove bit set that he uses in his cabinet making? If so, what were your thoughts. I looks really slick on his video when he uses it in combination with a pocket hole jig. I really like the fact that the tongue is offset to allow for either a flush fitting joint or one that can be used for scribing along a wall. Any feedback would be great before I go out an order a set. Thanks.