They have these funny things at the Immigration... with all the nformation about you inside... what are they called...? Oh... right... Computer... 😁
Since eVisa the Immigration, the Embassies and the Consulates have the most data in the same database... no chance to "hide" the fact that you hold a visa anymore. Maybe some shady agent can manage something like that, but it's a very big maybe...
This is partly correct, yes... but nevertheless you are not allowed to work inside the Country (Hint: Workpermit) while holding a DTV... that's what I said.