Yes, I think typically if you want fast state changes, the idea would be to make a “Scarbee” rack, containing pre-loaded instances of the sounds you want. You can either do this with multiple instances of K5 in your rack, or a single K5 instance running a multi, with your different Scarbee sounds in different MIDI channels. Then set up your rack states so that the routes switch to route incoming MIDI to the different instances or channels.
Not only does this mean there’s almost no delay when changing states (the instances can be pre-loaded), but also when you change state, any held notes or envelope tails will continue after the state change, for silky-smooth sound changes.
Neil