Well, the best way to get into increase your speed is to change to reload=scrollclic and sword=scrollup, get used to it for all the shoot>reload+sword moves. And keep your old reload key for RS.
I'm not sure how the true stab shot work, what I did wasn't really Dagger FBS, more like Dagger DHS with gundashed Yoyo>dash>stabshot>(dash?).
My last finding was doing a flip when you get recoiled, but doesn't really have practical use. You basically dash to someone blocking, and slash right before you land, then flip while you get recoiled. What will happen is you land before the recoil animation happen allowing to flip before you get locked in the recoil (like flipcancel shown in my previous video). Nothing new but I guess most don't know how it works. Could be usefull in glad if delayed slashes are well timed close to the ground ^^