This is very likely. While I moved away from the topic, a number of scientific articles appeared on the subject of the costume and weapons of the "Russian conquistadors." Very interesting information. Sponsors of the expedition, the merchants of the Stroganov brothers, provided the expedition with the most modern weapons and armor, including the European one. For example, on the arms of the detachment of Ermak there were Spanish arquebuses. In addition, the detachment included former prisoners captured in the Livonian War. I think that in the Livonian Order there were a lot of Europeans who would prefer the usual weapons for them (this is my little speculation))) However, the Cossacks also never hesitated to use their spoils of war.
Figures of helmets and armor of the detachment Ermak from the annals of that period. I think I see a lot of European armor...
