Hey again, if you use the Potion on Concealment you become invisible for 3 minutes if you stand still. Casting the dismount item on a player wont break this stealth. Only if you move or cast a spell your stealth breaks for aslong as you move/cast and are in combat.
Use of this: Dismounting people while in stealth in front of OG/SW and seeing them wonder why they get dismounted. =)