Quote Originally Posted by Simon Barden View Post
Electrically, a toggle switch and a 3-way Tele switch are quite different. The toggle switch is composed of two x two-position normally-closed contacts. The traditional Tele 3-way switch is a double pole triple throw switch. The toggle switch has 4 terminals (3 for box types as two of the terminals are internally connected) and the traditional Tele 3-way has eight terminals (though some import switches cut this down to 4 or even 3 for ease of wiring a standard configuration). When used in the normal neck, neck+bridge and bridge configuration they perform the same function, but the Tele switch can be used to do more than the toggle switch if you really want it to.

So they aren’t just a different physical configuration of the same switch.
I over-simplified. But my point being I have seen teles with 3-way toggle switches instead of blade (some prefer toggle) and LP-ish 2-pickup guitars with blade switches. I still believe the addition of a push/pull pot can be configured with a a 3-way toggle to add the middle pickup. I'll work it out tomorrow on the bench.