"Why permasoak at all"
I don't (except a cheap-behind off brand coarse hard bound that I use to flatten), but it certainly sounds desirable when you want to be very disciplined about sharpening ("You find it blunt while prepping, you sharpen it now, stante pede")... On the other hand, you could get splash and go stones. On yet another hand, they will be extra cost if you already have soakers. On that same hand, you might just like the soakers more for other reasons. If that hand can still carry something, you might find yourself in need of an unexpected grit while sharpening, and don't want to wait to get to use it... Finally on yet another hand, the extra cost applies only if you already have non-s&g AND permasoak-proof stones...