Great point
@stratamania that active pickups aren't loaded down by their pots like passive pickups are, so there really shouldn't any discernible difference in volume if the pots are bypassed, to justify bothering to implement blower switch functionality on a guitar with active pickups.
@MiLo26. Unfortunately now that you don't have a 2nd functionality to use with your 3 way switch (i.e. blower/pots bypass isn't worth pursuing as described above), that means you do **NOT** want to use a 3 way switch if you still wire it up as a kill switch only. You want to use a 2 way switch only. The reason you don't want to use a 3 way switch, is that the middle position of the switch will be very noisy, because the output from the pickups is still active in the circuit and making its way to your amp via the output jack. The signal also getting routed to ground at the same time isn't enough to quiet the guitar because the connection to the pickups is still active. Due to another type of noise problem noted in the Premier Guitar article below, using a 3 way on-OFF-on switch is also not a workaround either. You'll have to save your Dimarzio 3 way on-on-on switch for something other project.
Following is an article from Premier Guitar that discusses kill switches and why annoying noise would be present if the signal from the pickups is kept active instead of disconnected from the circuit (in addition to sending the outpack's tip to Ground):
How to install the kill switch made famous by EVH, Buckethead and many others
www.premierguitar.com