I do own these! It's not my favorite (Dive rite for me) but it's quite good!
If you like branding for some bucks extra you can have these on other flavors (Poseidon, HOG, UTD...)
I don't know if the ones in the picture are neutral or negative. Mine are negative and, in drysuit, are the easiest to back-kick of all my others: Jets, Power Fins, Hollis F1, Mares. Actually, the F1s are really easy to back-kick, but really long.