Saving White Ink
It's the "until you need it" part that concerns me.
Loading an inkline on the VS-series is not as straightforward as it used to be in the good 'ol DX4 days.
Ink recirculation system and pressurized ink delivery makes it a little more tricky to mess with individual ink lines.
I believe that it can be done, however you would probably need to do a full ink renewal should you want to run white. That's about 100ml of ink down the drain.
Doesn't seem like a sustainable process.
~E