What is the benefit of doing this? If a cop takes your driver's license, it doesn't matter whether you have it or not, you are not allowed to drive in that country.
An international license is valid just for a year, after that you NEED a local license (or pay bribes when stopped, what comes cheaper in some places than getting a license).
Some countries don't accept international licenses at all, so that you actually need a local one to be driving legally.
In less developed countries, you may have more corruption at a lower level. Having a license you don't care about losing is a big plus.
You might encounter a cop that takes your license to verify your info (I had one police guy at a road checkpoint in Sayabully province in Laos about 20 years ago taking my passport and 'reading it' upside down (I bet it was his first encounter with the alphabet), following up by asking for a bribe (I wasn't even on my own vehicle, but just on a local bus) just to let me continue.
(I gave him the equivalent of 5 cents, just to continue - because the locals on the bus were waiting to go on), today's bribes are much higher.
In Cambodia one used to have to pull the keys from the bike and put it in your pocket when getting stopped by police, as they would take the keys and ask you for money to get them returned if you werent pulling them first, even without any traffic violations.
One can use driving licenses for ID reasons or as a security deposit at some places (some take it as a security deposit for a rental bike if you don't want to leave your passport with them - as inane as it sounds - as the shop will keep your license while you are driving, and you'll have nothing to show to the cops when getting stopped.
Even following all laws, some "licensed government thugs" might still ask you for bribes and take your license to the police station, if you don't pay them. Have fun financing the karaoke party for the cops, having more licenses gives you peace of mind and more options.