JNT is much different than the D'arce. The JNT is what I use when guys are being finicky and don't want to comply when I'm D'arcing them. Then JNT comes off the "Vice Grips" as eddie calls it, Or "Bolt Cutter" as Jeff Glover refers to the grip type in his D'arcepedia. It's super effective, if you've got a strong vice grip. I'd put many reps into it to become profficient with the Failed D'arce to JNT. Word On the Street is those Vista Freaks Love their JNT'S! They all have some slick modifications to bump up your success rate. But don't fear it, it's not just a neck crank (Exemplified by the video). There's tons of power from there and the tap comes real quick so be easy on your training partner.