... How about no? :colbert:
THe way that thing is presetented really does sound like decidion made int he beggining of the game (a.k.a. slecting shot type). Though concering how that would effect the story, how about the shot type will change the boss of,s ay, stage 5? Like, the person behind the weapon possession is not the one respondible of the youkai outbreak, but the heroines meet up before finding fugitive. If they use "weapon" shot type, they would fight her. However, if they would use "weaponless" shot type, they would have to fight their possessed weapon manifesting their user's form.
But eh, we don't have lot of time to make theories before the demo comes out, so I guess its better to make them now or else.