You can do it while in hide, I've seen many rogues do so. I don't know about invis pots, as usually they are no longer effective after an action is preformed. Without getting close to a rogue in hide to be able to see them, or aoe'ing them, there is no way to tell that they're there or not.
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Dejavu, Paradox, Ascent, Legacy, Valkyrie
70p/64s/65m - Open Beta Toon
Fix mechanics before nerfing anymore classes to hell.