The Hammerless has the dubious honour of being the only damage-boosting combat asset in the entire Rogue Chapter 2 evergeen pool. The ability to fight using foot is appreciated but the requirement that the target be exhausted first means unless your name is Trish Scarborough you'll typically have to waste an action setting this up, making it unsuitable for a primary fighter.
Rogues ended up one of the strongest combat classes in Chapter 1 so it'll be interesting to see whether the class gains more traditional combat assets down the line.