since 1990 I have been living part time in Poland and hunting in two Polish hunting clubs. I speak fluent Polish. The post comunist era has shown great economic growth with a lot of "new" business men doing their best to show their dollars, one of the more prominent ways to show off, is to have custom guns and double rifles built in Poland. Szymkowiak is one of several in this business.
The reputation is not really at the level of say German producers and most times the guns are refitted with a set of barrels.

Generally gun prices are VERRY high in Poland. The truble of Importing guns from Germany makes it little attractive for the average Polish hunter to go shopping in Europe, so they are often stuck with guns imported by the official dealers at verry high prices.

I have never seen a double rifle built by Szymkowiak, and i have never seen any reports as to the precision or second hand value of one. The roumor says that the barrels are produced in germany and only the final fitting is done in Poland....