The reason there's not going to be a lot of holsters geared toward that gun for concealed carry is because it's a .22 Target pistol. If you're going to to carry a .22 get a .22 that's meant to be a carry gun. That gun is about the size of a 9mm service pistol. The "problem" with the .22 is not only the size of the round, but that the ammo is more prone to misfire than any other caliber I am familiar with.
I hate saying this, but IF you really want to carry that concealed, about the only thing you're going to be able to find is one of the crappy nylon one-size fits most jobs.
I'm sorry I can't be more help, and I hate it when people reply to a post suggesting "X" when one is asking about "Z" but I can't in good conscience tell you to carry that gun as a concealed carry piece.