Re: Learning the spey cast on a Switch rod....
My first was a 13' 8 weight and you can cast with your back against the bush, literally no room behind you at all. When fishing small water where the long rod will not be a good choice I use one hand rods. Something you need to understand is that the "Spey cast" can be done with a one hand rod albeit much harder to do I have been using what is known as a snap T and a single or double spey for 25 years with one hand rods. I see spey casting as a highly developed roll cast. This may be oversimplifying the subject but if you understand the physics and mechanics of a good roll cast you will have no problem learning the two hand casts.
Do not cut yourself short when you buy a rod. The longer the rod the easier the cast and as I said when conditions demand a shorter rod you already own one, right?