I have a character who has levels in medic and monk of the silver fist. Both are discipline classes and thus are granted the full benefits from path of war 3rd party system.
I was on the systems and use document and cant seem to find anything which says a character can only be in one stance. Since I have two classes, is it not possible that each class can be in their own stance?
Stances are initiated as a swift action. A stance remains in effect indefinitely and is never expended. The benefit of your chosen stance continues until you change to another stance you know as a swift action.
A stance is initiated as a swift action. When you enter a stance, you immediately gain its benefit. You continue to gain the benefit of a typical stance as long as you remain in it. Some stances give you a benefit only when you meet certain conditions. A stance might grant a bonus when you move, or stand still, or if you attack a flat-footed opponent. You cannot enter a stance you are already in.
You can use a single swift action to end one stance and begin another, or you can choose to simply end your current stance without entering another. You continue to gain a stance’s benefits until you switch to a new stance or end your current one.
Your stance ends if you are rendered helpless for any reason. If you later recover, a swift action must be used to initiate your stance once again.
Multiclassing does not allow an initiator to have any individual stance or maneuver known or readied more than once.
Warlord Stances Known
Warlords begin play with knowledge of one stance from any discipline open to warlords. At the indicated levels (see class table), the warlord selects an additional new stance. Unlike maneuvers, stances are not expended and he does not have to ready them. All the stances he knows are available to him at all times, and he can change the stance he is currently using as a swift action. A stance is an extraordinary ability unless otherwise stated in the stance description. Unlike with maneuvers, the warlord cannot learn a new stance at higher levels in place of one he already knows.
Warlord 20th level ability dual stance
At 20th level, the warlord’s ability to use his stances improves, allowing him to gain the benefits of two known stances simultaneously. He must still adopt each stance individually, requiring him to expend one swift action for each stance.
So the rules clearly state that all classes a character has cant learn the same maneuvers/stances, but it does not say that each class is not allowed to be in its own stance. I am assuming that this is an oversight as multiple stances can be quite powerful as its a capstone ability in a class after all.