Seems to be an answer to a question no one ever asked.
Awkward shape, very awkward trigger that's too exposed, very unlikely to be able to make an effective holster, can't safely just be carried in a pocket or in a waist band, slow and awkward to reload with the small cartridges, and violates a Prime defense principle....
NEVER, EVERY plan on getting more then one shot in a Real World defense situation.
In this case you'd get two, but the .22 Mag is not noted for being a good stopper.
I've talked to people who carried .22LR pistols as a defense gun claiming "I can get off 10 rounds as I'm falling".
To which I reply... "But what happens if the gun malfunctions or a round misfires and you only get ONE shot"?
Bad things happen, guns break/malfunction, ammo misfires, the other guy gets off a lucky shot that hits your gun hand or even the gun, you trip and fall, etc.
Your life saving defense gun must be able to do the job with ONE SHOT.
If you get more, great, but you better be able to save a life with just one.
Plus, why would you want something like that when you could have a 9mm Kahr Arms CM9 weighing 15.8 ounces and holding 6 rounds of 9mm +P.
Or how about a Kahr CW380 weighing 10.2 ounces and holding 7 rounds of .380.
There's also S&W "J" frame revolvers with 5 rounds of .357 Magnum at 11.4 ounces.
All of these are "clean design" guns that can be carried safely, there are plenty of effective holsters including pocket holsters, and reloads are fast. Spare ammo can be carried in magazines or speed loaders.
In short, yet another "gimmick" gun that no one serious would ever carry.