Good Morning, Wheelie_Fan,
I darn near hate to admit this: I live in CA. Every handgun offered for sale has to be approved by CA DOJ, which means it might be months after the Cobra is offered for sale that it might be offered for sale in the most gun hostile state in the country.
For bipedal self-defense, I'm all about semi-autos. However, I do love revolvers. A good-quality 2" .38 Special that's +P rated has a lot of utility. Even in urban So Cal, a hiker in local So Cal mountains would put him in danger of mountain lion attack. Loaded with shot capsules, it's a darn good rattler gun, and we have rattlesnakes all over So Cal.
I was never much of a .357 Mag believer. In fact, when I've carried a .357 Mag for bipedal self-defense, it was always loaded with the FBI load, which is 158 grain LSWC or LSWCHP +P. Even out of a Model 60, the FBI load is not fun to shoot. I couldn't imagine shooting a .357 Mag round our of a "J" Frame.
If terms of efficacy, one isn't going to get appreciable results using a .357 Mag round out of a 2" barreled handgun. The impressive if not fabricated ballistics of the .357 Mag round were obtained (if they really were obtained) out of 8.375" barrels. Out of a 4" barreled 586 that I once owned, the best I could get was ~1250 FPS with 158 grain .357 Mag loads.
The .357 Mag has a lot of negatives to be a good self-defense gun. Foremost, it's a revolver that holds 6 rounds and takes too much time to reload. A .357 Mag revolver has to be heavy to manage its recoil. Managing recoil is essential to retaining sight picture. Shoot a .357 Mag round in an enclosed area such as a bedroom, and the excessively loud report will leave you disoriented. That's never a good thing were a bad guy to want a good guy at room temperature. Finally, muzzle flash, especially out of a 4" barreled .357 Mag revolver, will blind space station astronauts, which means it will cause its user to lose sight picture, which is a bad thing were a bad guy shooting at a good guy. Oh yeah, I've been exposed to personal accounts where the .357 Mag failed to live up to its manstopper billing. (There is no such thing as a manstopper tactical handgun.)
The FBI load out of a 2" barreled revolver ought to give 12" of penetration, which is the industry standard. Hence, it ought to perform as good as a .357 Mag when fired from a 2" barreled gun.
I do love good quality revolvers. I wish I owned a 4" Model 27-2, what many handgun aficionados call the best .357 Mag revolver ever made (no slight intended to Python fans). But I don't. I do own a 4" blue steel GP 100, which is a decent handgun, but it does have its problems. BTW, I consider a 4" barreled revolver maximum length for a bipedal self-defense weapon.
Anyway, if the Cobra is ever offered for sale in CA, I'll own a copy.