MLong,
The two stage Aleph switch does fit the Surefire E2e.
You can find answers in McGizmo's Forum about which resistor to use. The two stage switch is for Luxeon lights and won't work on a stock E2e with the incandescent lamp.
It will work with a KL1, KL4, Aleph & McLux heads with either Surefire E series or Aleph bodies.
As to whether or not it will stand on end or not, you need to read up on Aleph tailcaps in McGizmo's forum because there are four different styles of Aleph tailcaps. Most (3 out of 4) Aleph tailcaps do stand on end.