CZUB made some in 9x19, but with completely different tooling. It is beefed up alot and much larger.
Sales were not there as it was competing with the all the other 9mm SMGs. (defeats the purpose of being a Skorpion)
There are a few floating around but very rare.
CSA does not have the access to the specs/tooling or the parts support from the armories.
Last time I inquired CSA, they were not available to make such a version as they dont even have a working sample to reference upon.
The only hope is that CZUB restarts production on their old Vz68/Sa361, but unlikely as they have moved onto the EVO 3.