I recently bought one of these from KEH. Great lens. I'm having a lot of fun with the new perspective.
It's roughly equivalent to 90mm for 35mm. Great for head and shoulders portraits (and, with a TLR, you never lose view of the subject). A bit long for full length portraits unless you have space. I just find myself using my 135mm much more.
"Far more critical than what we know or do not know is what we do not want to know." - Eric Hoffer