Fair enough. Since I went with Switch battle style in the end, the only time it's been an issue is when a trainer leads with Poochyena / Mightyena and I haven't led with Healthy, which happens rarely enough that it's not been a big deal to just let something faint.Ok Tetrinity (lmao actually correct tag this time) Two things:
One, I realized this might be an issue, so if its too annoying, Healthy can bypass the switch rule if it has a solo.
Also, Can Arthur evolve once its reached the Elite 4, or does it actually have to be in the building? This influences my ability to teach King's Shield to it.
Teaching King's Shield is fine. I suppose it's a bit ambiguous, but I consider "reaching the E4" to be achieved when it's possible to Fly to the Pokemon League.