|Ross Byers RPG Superstar 2008 Top 32|
Throw Anything and Catch off guard are weird feats.
They are basically Weapon Proficiency (Improvised).
Clearly, they are not meant to replace individual weapon proficiency feats - that would make them too good. So we have to say, 'no, a longsword is real weapon - you can't use Catch Off-guard with it.'
But that leads to the weird situation where an Alchemist (since they all get Throw Anything to go with their bombs) is better at throwing a beer stein or a rock than a throwing axe, which is meant to be thrown. (Your GM might decide the rock only does 1d4 damage, but 1d4 that hits is better than 1d6 that doesn't.)