i dont have much experience but i think that rogue/cleric would be pretty good in pvp at 100 cap if you have xbow and dagger. cuz if you only have lets say xbow, u wont be that good. the strategy with rogue is to attack a littl bit with xbow at the beginning and spam kb if you can and when you kd you switch dagger and you do mortal wounds and u keed attacking if not already dead. thats what i do and it works pretty well

but im level 87 so im not in d10 for now ^^
i hope this helps you