This build is what I currently use to PvP as it is agile yet at the same time holds a massive punch and can quickly deal with enemies.
I personally prefer using the SK Spear and Ricard's Rapier as the spear can be spammed (either 1h or 2h) against players with no poise. The rapier can be buffed via Sunlight blade or Darkmoon blade depending on whatever covenant you're in. I wasn't actually in the covenant so I can't actually use DMB, that's why I'm not using it otherwise I would. So with a buffed rapier you can attack players who have higher poise more efficiently.
Rings and armor can be changed to whatever you personally want but to be honest this class is supposed to hit hard and be quick, if you add armor with higher poise you could lose the fast roll. Rings I would advise the hornets ring for backstabs and parrieswith the rapier but it could be switched out for DWGR (Darkwood Grain Ring) or whichever ring you want. Havels is needed for equipment load. We then come to the shield/parry weapon; I use the parry dagger. I personally can parry fairly well so I use the dagger to reduce the weight but you could switch it out for a darkhand as they're both 0.5 in weight.
Overall I would say this class is worth making as you can effective PvP and PvE depending on what gear/rings and weapons you use. The joys of this build is that it can be played with to meet what people want.