I have two switch rods, a TFO Deer Creek and a Redington CPX. Both are 5 wts with the TFO being 11' and the CPX being 10' 6".
I agree with Dave D. It takes awhile to get them dialed in line wise.
I haven't used mine much in moving water. I got them primarily for overhand casting off the beaches for silvers. For overhead casting, I've found overlining them with an 8 wt line like an Airflo 40+ works pretty well. The 8 wt line puts them in a grain weight window they seem to cast well with. I've got some shooting heads I'll be trying as well once July 16th rolls around.

JDarr,
Switch rods show up rather frequently in the classified on the WFF board. There are a few listed there currently.
http://www.washingtonflyfishing.com/board/forumdisplay.php/8-Classifieds