Definitely noticeable, you seem very comfortable playing Rune making everything feel natural.
Everything comes down to believing the character exists away from the performer in my eyes. An accent or a dramatic shift in personality always goes a long way, so even if you're still honing skills, it gives an illusion of the character learning instead of the performer if done well, then we can just say it was character development instead. Suspension of belief is so key and you're doing a very good job providing it. A different example is Dodger playing a blob of slime, the personality and accent match how ridiculous the thought of a talking slime is, she is so good at making me say.. yep that's a thing.
While the big RP moments like Belle with Aldo are amazing, it's the little things that add so much. Such as Runes' comment about going home if she had to swim this past episode really bring characters to life, for me at least. Zeke is really good as well adding those little 5-10 second scenes of Aldo doing something random. Also your willingness to insert Rune into the world, like ep. 10.5 saying it was your mothers necklace (which seemed to catch John off guard) is a skill even long time Rollplay members are still just learning to do without prompt.
I love the narrative RP heavy, combat light shows so as a viewer those little things provide a certain level of immersion to the world and characters .