According to the rules reference, terrain is impassable if it's height is greater than the mini's. Otherwise it's merely difficult. I'm curious whether raised arms / weapons lifted in the air count when determining this. Is it possible that a piece of terrain would be just difficult for the commander Luke model but impassable to the operative Luke simply because the former keeps his sword up in the air?

9 minutes ago, Lightrock said:

According to the rules reference, terrain is impassable if it's height is greater than the mini's. Otherwise it's merely difficult. I'm curious whether raised arms / weapons lifted in the air count when determining this. Is it possible that a piece of terrain would be just difficult for the commander Luke model but impassable to the operative Luke simply because the former keeps his sword up in the air?

As of right now, the entire miniature counts. There is no distinction made for weapons, arms, antennas, etc. However, terrain less than half the height of the mini is only difficult if that terrain is difficult for that type of unit. It's not difficult by default. That's a special thing for certain types of terrain.