Air Layering Clematis: Matchstick Method Works

When air layering clematis, do I use the matchstick method (slit) or remove a full ring of bark? Is this a monocot/dicot difference?

Simple Wound, No Ring Removal Needed

Just make a wound—the matchstick method (slit + toothpick) works fine. No need to remove a full bark ring. Monocot/dicot differences relate to embryo structure and vascular bundles, not layering technique. Even simpler: ground layering. Bury a vine section (still attached) in a shallow trench, cover with soil and a rock. In a few months it roots—then sever from mother plant. Less fuss, high success.