Not really. Throwing knives have at the very least a 30 some second cooldown. And that's running max strength, which most Gunslingers do not run, and it would not ohk unless you run incendiary blade, which was a much less popular option than Knife Juggler. And also required the other player to run absolute minimum armor, something the vast majority of the player base does not run. Shoulder Charge, meanwhile, only requires you to run for three seconds and will ohk everything. With Peregrine Greaves you can even ohk supers.