I finally used these today for a full session. I like them.
They have a comfortable foot pocket and a thin, soft heel strap. The fit seems a bit deceptive. When I try them on out of the water, they feel snug but comfortable, but in the water everything seems to loosen up, so I wound up using them with fin socks and a heel pad to tighten up the fit, and tethers so I don't lose them. I ordered them online, but even if I'd tried them on in a shop I'd still have that loose-in-the-water fit.
The thrust seems to be a bit greater than the Churchill Slashers. Just enough thrust to catch the tiny waves we had today fairly easily, but not too much, so they didn't hurt my effed up foot. Also, the blades aren't as stiff as the Churchills, they seem to bend both ways when you're kicking with them, I had to get used to that.
I'd say they're a bit more difficult to walk in, in the shallow water, than the Churchills, but all things considered they're a pretty nice fin.
As far as using them for DKing, I wouldn't know. I could use a few tips about that, myself.
