From what I've been able to gather, this game does seem to support cloud saves on Steam, but not on GOG.

As someone who plays across multiple machines and has to do some travelling/gaming on the go, this feature is quite handy - is there a specific motive as to why the GOG version does not have the functionality? Are there plans to add it in the future?

Manually transfering files is not a major deal, by any means, but extra convenience is always welcome!