A bug I found while using my rogue, very simple bug, many people have probably encountered it already:
STEALTH MASK! :cool:
1st) activate stealth.
2nd) activate mask.
3rd) activate stealth again RAPIDLY pressing on it until it goes stealth.
*If this works, you can also attack with your normal weapons + monster attacks STILL while in monster mode! (Be warned, SRO may get confused and stop your movement or freeze your attack - like this you look like a scarcrow xD - but don't worry, to get out of this, either attack a monster with normal attack, or deactivate the mask and move).
I ONLY know that this can work with the rogue on crossbow skill, as I have not tried daggers, and do not know about other skill types.