I admit it was pleasant to see that list that Trojan Horse made a few posts in - even without it being in dated order.
And, I agree with whoever said that it can't hurt to try it out, and if it doesn't fly, fine - nothing for the official FT Calendar to feel threatened about. Perhaps if it wasn't referred to as a Calender, but a Quick List (or something), this might also make it not such a big deal.