Thanks! And yes, they are. To keep it in line with the OS, the save locations are stored in different places where the OS tells the game to put them. So... on linux that's in .local/share/DungeonsOfFreeport/save I think, on mac it's Library/Application Support/FunTimeElectrics.DungeonsOfFreeport/save, and I think on Windows that'd be under AppData/Roaming/
While it is best to adhere to OS standards like this it IS a pain finding them. I am going to create a button in options that just opens that folder I think, to make it easier to find your saves, config, screen shots, etc.