Agreed - stick to your guns. I was so glad we did! With Kash, we just used a regular harness and that was good enough. When I trained Layla years ago, she used a regular harness as well.
We finished our classes a couple of weeks ago. We had to do a test at the end, and Kash passed! He normally didn't listen well but that last class he did. And somehow, Lucy failed! She was the perfect little student for all the classes until that test lol! Oh well, they both got certificates of completion that are now on our fridge
They really did come a long way!