There has been a lot of talk about switch rods lately. As a result there has also been a bunch of bad information injected into it. Here is a definition of spey and switch rods to start clearing some of it up.
What is the difference between a Spey and Switch rod?
By popular definition in North America a Switch rod is between 10.5 ft and less then 12 ft long. A Spey rod is 12 ft or longer in length. In Europe these rods are not called Spey/Switch rods,,,,,they are defined as Two Handed rods.
Both rods will perform Spey or double handed casts in exactly the same manner.
A west coast rod builder, Bob Meiser from Oregon coined the name Switch Rod to describe his new line of short two handed rods that were suitable for both Spey and overhead casting with two hands. Later many writers changed the meaning to Spey casting DH or single handed casting.
To further confuse the issue we have a very old Spey cast called the Switch Cast. This is nothing more than a single spey where we pick up the line and present it back in the same direction with a touch and go style of casting.
Switch rods are spey rods. Just short ones you don't need to be built like Hulk Hogan to overhead cast.
Here's a link to Meiser Rods.
In case you don't want to read the whole thing thing, notice in the quote where Bob Meiser calls switch rod a term for a two hander. "Both the Switch Rod and Grain Window concepts were originated in our shop. Both have now become generic terms within the two handed community."