I am more used to the top-down heel flap and those socks I have done toe up have tended to have a gusset but not this one. I like a good heel, something that has a nice tight fabric and not holes and I pride myself on not getting holes where the leg and heel join but this heel looked great from the left
Cat's Sweet Tomato Heel. It's amazing and I loves it.
The wedges make a great heel and you can add another if you have mega huge heels but most people seem to be able to get away with doing 3 - like I have. Cat Bhordi is an amazing knitter and to have devised a heel that works so well is fabulous.