I have two pairs: One is a closed-back style with a buckle toward the front (an old style by Dansko called "Tamara") and an open-backed, fleece-lined clog with a clunky base made out of an almost athletic-type material (old style by Dansko called "Parson" or "Parsons"). Unfortunately I'm on a computer that doesn't save Finds correctly.
I have an extremely narrow heel/ankle and low-volume feet (average size forefoot, size 38) and never thought clogs could work for me. I found that shopping at a Dansko specialist (The Walking Company) makes an enormous difference. The sales associates really know their product line and steered me toward the Tamara, saying that it was designed for people like me with a narrow heel. They also explained that when a Dansko clog is fitting properly, it's normal to experience heel slipping that would normally not work in other shoes. The Tamara has been such a great, reliable shoe that I have a backup pair still in their box. To my eye, these look best with straight-legged pants/jeans.
Like Suz, I use the Parsons shoe as my house shoe/house slipper. I tried to find a house slipper with enough support for when I'm on my feet around the house and again, it was a Walking Company salesperson who steered me away from the house slipper section and recommended that I adopt these clogs as my house shoe. Even with my narrow heel and the open back, these stay on my feet all day--including up and down basement stairs.
I don't know if I could wear any other type of clog.