I'm pretty sure the obvious answer is no, but I'm watching back worldtrigger (battle cats got me back into it), and i'm noticing that when Kuga uses Osamu's trigger, it looks nothing like a Raygust.
Maybe not even an optional trigger, because why would Osamu have it equipped randomly, it's just like.... "Force of will"
"Can you force Raygust into a shape of your choosing by sheer willpower?"
Season 1, Episode 3, ~10:26
Sure it doesn't look like the perfect of blades, its all wobbly and wonky, but that is still very clearly not raygust shaped. Unless maybe i'm dumb and Training Triggers have weapons not registered in official triggers?
cause like: Sure, Kuga has more trion than Osamu. But that increase in trion doesnt change the fact you're using a Raygust. You can't pull out a Raygust chip and then start using a different weapon. That's like me putting Escudo as an option trigger, and then using it to summon Cars made of Trion. Thats not how that works.
so idk whats going on there.