But you've gimped yourself. How is this any different? Other than choosing where to be gimped? You seem to be saying its okay to gimp yourself, as long as it isn't in the combat pillar. Unless you can explain, what is the difference?Depends on the class but usually intelligence, charisma or strength.
Can you though? The NPCs, you are interacting with, are cool with your cleric casting guidance on another PC during the conversation? Really?You can compensate via spells up to a point (enhance ability and guidance).
And enhance ability helps the 12 strength fighter to trip, push, grapple, and/or avoid those things as well. So that spell compensates for him to a point as well.