This Pedal is currently available.
2x1 Switcher
Most A/B pedals simply leave the unused signal open. Saturnworks A/B pedals ground the unused signal (on gear forums, this configuration is sometimes associated with guitarist Eric Johnson). This requires a more expensive switch and more wiring, but the result is a top-quality switch with less chance of unwanted noise.
The ‘reversed’ configuration simply has two jacks on the right and one one the left, versus one jack on the right and two on the right. Since both are passive, either can be run in either direction. However, if you would like to switch one inputs to two outputs, the reversed setup can make that easier with a standard right-to-left pedalboard setup.