That's a good point, worth getting clarification on. I'm still waiting to see how Larian is going to implement reactions because of that reason. It wouldn't be a fix-all, but if you could set your reaction to happen automatically I think that would work in most cases since most characters dont have multiple kinds of reactions. A mage's counterspell is normally their only reaction but then again shield is popular too. And since either of them can be used, it wouldnt make sense to have to set it to only one...unless they build out their reaction system to allow for an if/then scenario.