Personally I just let the other rogue open. RVR is decided on who gets opener. There is no art in winning a fight in which i get opener and then just burst the dude down in a stunlock.
Now if i let him/her open and still manage to win, thats satisfaction
And ye, you just stand and wait till the rogue makes his first move in a duel. Look the OP asked for “what to do” and thats the meta.
Edit: I might add: You are allowed to open on the rogue if you can see him. Like a lock with fel hunter has good chances to do that. But since the majority has imp stleath 5/5 you most likely just wont.