I had the same reaction when I got my Neumann KM184. I just thought "WHAT? Its THAT small?? Great, now I am finally having a Neumann and no-one will ever see it". Does size really matter??
Nah, it's not a problem; just a surprise. I was expecting something about 33% larger. I bought it primarily as a Floor Tom mic and it's size makes it ideal for that application (nice and unintrusive )