You're not entirely accurate here - you say to go through the dosdevices folder when writing data for sexsim to the data directory.
See, in Ubuntu 14.x and Wine 1.7.33, dosdevices/c is actually just a symlink. It actually points to /home/$USER/$WINEPREFIX/drive_c/...
So, in the case of user `foobarbaz` and a default wine prefix, you'd end up at /home/foobarbaz/.wine/drive_c/...
What makes you say it doesn't work any other way? (It's also not hidden - most users don't want to see a thousand . folders in their home directory - it's easy to unhide it with ctrl+h or whatever XFCE shortcut there is).
And you know why I'm actually right? I do a lot of Ubuntu development. And I mean quite a lot.