I have no idea what the difference between the two versions' files is aside from the client .dlls, so this question may just be ridiculous, but:

The announcement and FAQ both make it clear that you can't share saves between Steam and GOG versions of the game and that you can't rent pawns from saves on the other servers. What I have not seen addressed, and would like to know whether or not is possible, is using both services with a single installation of the game. Can I (for example) install Dragon's Dogma into a single directory with GOG Galaxy, then tell Steam to install to the same directory, and proceed to launch the game, with different saves, from either client as I choose? The idea would be to decide "I want to play with my save on the Steam servers today," or "I want to play with my save on the GOG servers today," and be able to do that without wasting 20 gigs on a redundant installation.

Update:

After further web searching, I've hit upon what I believe might be a primitive solution. The steps I took are as follows:

Install DD:DA through both GOG Galaxy and Steam, into two separate folders. This leaves two installations on the disk, taking up ~40 gigs of space.

Delete the game assets in the folder nativePC from the GOG directory. I chose to do this to the GOG installation rather than the Steam installation because of the lack of DRM removing potential complications.

Open the command line and enter the following command: mklink /d C:\GOGDirectory\DDDA\nativePC C:\SteamDirectory\DDDA\nativePC. This step creates a symbolic link informing the registry to treat the contents of both paths as if they were the same directory. Any changes made to one are immediately reflected in the other, because they're actually the same item even if they appear to have different filepaths.

The game is now "installed" twice, but only takes up as much room as a single installation on the drive.

Now starting the game through Steam and loading my save file takes me to my old Steam character, and checking the Rift shows me my Steam friends' Pawns. Starting the game through GOG shows me my new GOG character and a rift full of strangers' Pawns, because I haven't friended anyone on GOG.

I feel that it's premature to call this a success, so I'll have to test it out for some time. I'll report back in a few days to let you all know whether or not it looks like doing this has caused one or both servers to ban my Pawn or otherwise cut me off from online play.

It shouldn't cause you to be banned. Most of the files there would be the game assets, and any logic or code is probably just scripting. Any DRM for steam will be done in the main exe and the steam DRM is generally the steam_api.dll located in the main directory. So as long as you don't mix and match save games you should be fine I think.

Thanks for trying this though, I was planning to do the same after my download finishes. :)

Edit: Just ran a comparison between the nativepc directories for both steam and gog versions and they are identical so this won't cause any issues. The only files that were different were the files I modded myself on the steam version.

thank you!