I give it a three because as a compact it is kind of big and I think it would be a liitle difficult for me to conceal without a jacket or hoodie.
That said, once you do get used to the sights and the trigger it is a lot of fun. And at 25yrds, the gun is more accurate than I am capable of taking advantage of (proof of that here http://www.easybakegunclu...40-A1---Range-Report.html). Add holding 10 + 1 rounds of .40 and you've got a great personal protection gun.