I can't find anywhere that you take double the penalty for swim checks when wearing full armor. Does it apply in Pathfinder?
1 Answer
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Nope, armor penalty has been more streamlined, it is the same for every dex/str based skill:
Any armor heavier than leather, as well as any shield, hurts a character's ability to use Dex- and Str-based skills. An armor check penalty applies to all Dex- and Strength-based skill checks. A character's encumbrance may also incur an armor check penalty.
Nothing different for Swim checks (more info here).