if somebody still wonders:
On my non-Galaxy installation the save-games are stored here:
To locate this, just search for DDDA.sav on your c-drive (or wherever else your user files are located).
there is a mod, which allows a normal save-game handling: http://www.nexusmods.com/dragonsdogma/mods/40
I havent tried yet. I can live with manual copying for the moment. But it is supposed to let you specify the savegame folder, so it should work with the gog versions, too.
For me, the save-system is one of the few flaws in this game.
As for the online-functions:
I also cannot play online, so we may need galaxy for that. I read of that bevore buying. It didnt bother me much, since I never wanted to play online in the first place. But it has a bad taste to it, somehow...
The save manager mod doesn't seem to work properly with the gog version, at least with the Galaxy-free edition.