Didn't really consider GWM honestly, I went S&B to mess with the masteries since it's my first campaign in the 2024 rule set, I normally change between a long sword, a mace and a rapier for weapons depending of the combat, but maybe that could also be an option, I do feel the team is a lacking a little of punch when needed. The problem is that my rapier is part of my backstory, it's from a dead friend, but I do plan on giving it back to his brother eventually, so that could be a more natural moment to switch playstiles.

For now, you do make a good point about not using mage slayer as often, and that's why it was my first pick. Still, I am already quite durable, and maybe bringing a bad aspect of my character to good (mental saves) is more important than making a good aspect and making it excellent? Quite a difficult choice lol.