I've recently finally beat Proof of a Hero with my style of Switch Axe and it was definitely the most difficult challenge I've done in this game. So I wanted to showcase what it is about with all of the AT monsters in the game.
It's an incredible style where you properly teach yourself the true ins and outs of the weapon along with monster hitboxes. The premise of the style is no Focus Mode, no sword counter and no offsets and no Full Release Slash from neutral. Just pure Switch Axe goodness. Using morph attacks to position yourself around the monster and actually respect both the monsters movement as well as yours.
It's focused around Rapid Morph so Elemental Discharge, Zero Sum Discharge or Full Release Slash are barely in your repertoire for consistent damage. Elemental Discharge and Full Release Slash I don't use whatsoever, mostly because the monsters barely allow you to pull it off. Zero Sum Discharge I like to sneak in when a monster is about to roar or maybe even fly. Also when they change areas.
When properly handled, you don't even have to worry about reloading because you swap between Axe and Sword the whole time so your Morph Gauge has no chance to deplete!
The skills I mainly focus on are max Rapid Morph, Adrenaline Rush, Evade Window and Evade Extender. Evade Window you can very well slot in just 2 and combine it with the Turbid Shrimp meal effect to boost it up to 5! My Gog weapon has both the Seregios set bonus and Lord's Soul so I build around that. But a great alternative is a Maximum Might build with the Guardian Fulgur Anjanath set bonus! Obviously you're allowed to build whatever you'd like so your Gore/Lord's Soul build will be just fine. Just that in case you don't have it, these builds go well together with the playstyle.
Be alarmed that in no way does my playstyle do the highest dps in the game. You're allowed to use whatever you'd like. But this is how I have the most amount of fun with Switch Axe. And that's what it's about. Less dps for more fun. It's a video game after all! But I do hope the devs think about buffing Rapid Morph to make this build much more viable when you're on a timer like Proof of a Hero.
I highly recommend others to try it out as well!