Shot a skorpion before- loads of fun. Its like trying to hold onto an airborne jackhammer though...and whoever said the weight is usless is right, what a shitty idea for a rate reducer. There are a few places I'd want a machine pistol- clearing a small room- say five tangos are in my shitter....or may be you want to eliminate *everyone* in the elevator...no, seriously, they are great "unconventional warfare" tools (ie terrorism, SEAL or AL Queda style, you pick) when the plan goes to hell and volume of fire is more important than accuracy.
Say you're in a hallway and some dude comes at you with a weapon, you've got to drop him and you need him stopped now. You've got three options, a very small shotgun, a large caliber semi auto, or a machine pistol. What you pick is probably going to end up being what your more comfortable with. And hell, who ISNT comfortable with dumping an entire 25 round clip full of 9mm with a fully automatic Beretta
into some jackass ?
While emptying a mag with a MP isnt any more deadly than emptying the same mag in rapid semi-auto fire, its probably going to get everyone to duck a little lower on the other side of the muzzle. If I were some kind of SF operator, I think I'd be comforted in knowing that even if my main weapon is out, I've still got some firepower with me....as opposed to a pop-gun. SOCOM though it may be.
Incidently I may as well add, Astra made a FA 1911 copy in 9x23, and the Mexicans messed around with an FA 45 cal Obregon (Natively produced 1911). My brother Aqil, from the AK boards, now rotting in a Mexican prison for doing yet something ELSE stupid, carried a factory full auto CZ-75 while in Tiblisi. China produces a wide variety of tiny single-handed machine guns, and the MP5K is a very comfortable one handed gun too. And dont forget the M.951R, the Bertta 951 full auto gun too with a ugly wooden fore-grip....