FWIW, I've worked on quite few Ibanez models with the switching arrangement above, and when I play them I find it very useable without needing extra toggles or push-pull pots. Nice and simple.

I haven't found an Ibanez neck that I would really be happy with, otherwise I'd probably own one. I certainly haven't tried them all and the ones I've worked on have mostly been shredder kind of guitars. Wide and thin just doesn't do it for me. I have no idea what the IB and SV kit necks are like.