Think about it, what direction do the saw teeth point.. Easier to feed the blade up through a hole than down through. Down through you blade is trying to cut as it is pushed through the hole. I have never stood on my head to bottom feed. I raise the piece of wood, start the blade through the hole and then hold the blade at the top of the blade as lower the wood back to the table. Even when I had saws you could top feed from(Excalibur/Seyco) I found it easier to bottom feed. You raise the board at an angle up off the table. But I do not understand why you worry it, you have an Excalibur, top feed, if that works for you that is they way you should sail your boat, so something like that.