Heh, I'm on the lookout for a FED 2 as well. I recently picked up the Industar 61 L/D here in advance of buying a body.
That will be my first FSU camera. Frankly, I'm not sure if it will stick for me. Maybe I'm just in 'collector denial', but I'm trying to stick with a set of cameras that have interesting role for me.
I've got a Canonet 17 for general walk around work, a Lynx 14 for the extra speed at night, a Olympus 35DC for ... heck if I know. I like the image quality I get and the fact that it makes me focus on composition instead of exposure.
The FED 2 would be my interchangeable lens rangefinder (I'm too cheap for something higher end) but I don't know the size/ergonomics would be a deterrent to use. As much as I like the Lynx 14, I rarely use it due to the size and difficulty focusing it at night. I can't think of many reasons to use it over a small body SLR with a 1.4 lens other than price. Fortunately for the Lynx, I have neither so it will stick around for now.
Maybe once I have lenses outside the ~50mm range the FED2 will show its utility.