Throw in an on-on DPDT and have both options or use an on-off-on and have three options (LED, MOSET, GE)! If you want to get really crazy, throw in a on-off-on DPDT on each of the two sets of diodes. This circuit looks awesome!!
Here is a rare one built around 2004 from Billet Aluminium Solid Bar!, the Speedster Turbo Charger!
I purchased it from the designer in 2012 who also gave me a complete spare circuit with footswitch & Jacks all wired up: