It may blow up a watermelon but when I can get a roughly 90% one shop stop percentage with garden variety 9MM HP rounds I’m not sure I see the advantage, especially considering the weight and handling characteristics of the gun.
Plus, the load your talking about is a specialty round - one specialty round. Which means it will be expensive if you intend to practice, assuming you can find it. I can go into any gun shop in America and will have multiple choices of effective 9mm loads that wont break the bank.
I guess will just disagree on this one.
I don't know that we disagree, just different perspective perhaps. The advantage I see to the .410 home defense round is that my mother has a much better chance of hitting an intruder in the dark if she squeezes off 2 or 3 of these rounds vs. 2-3 9MM rounds. Even non-vital hits are going to mangle as compared to a 9MM shot in the arm that likely won't deter an aggressive intruder. Of course, there is different 9MM ammo as well such as the Federal Hydro Shock that will increase knock down power.
Myself, I have a 12 gauge pump with a short slug barrel and a .357 Magnum under my mattress. If I don't stop the intruder, I am at least going to rearrange the interior walls! :)