No, I don't buy that. The only valid excuse is that you could get a CZ Scorpion for about the same price that you built yours for, but they're too different animals altogether.
1. Safety (better accuracy from a shoulder fired firearm vs. pistol) when using as a self-defense implement.
2. Less cumbersome when used in conjunction with additional hearing protecting accessories (suppressors).
Not every "why do you need" question comes from a place of anti-gun rights. Sometimes it's an honest question looking for an honest answer, like "I don't need it, but it's a better option for me".
I'd take a shoulder fired gun over a pistol for sd most of the time. If I worked outside of the house it'd be extra motivation to sbr the Scorpion. At this point, I don't.
The main reason would be ease of concealment in a backpack.
That's pretty much the same scenario that I've ditched it too. I wear it to the stand, and then it comes off. This was back in NE though, and in the middle of 1000 plus acres of private property.
I'd consider scrapping the orange too, but I'm going to be taking two super noob hunters fresh out of hunter's safety classes out into the woods. Both are super "by the book" types of guys too, so.......................