I spoke with the developers, and GedWise 6.3 for Linux is going to install the same version of GedWise as is installed through the Windows installer.
I asked about a Mac OS X version as well, and they mentioned that they are working on a Mac OS X based GedWise, and that the Linux version was a first step towards that.
If they have no problems, it’s possible a Mac OS X version of GedWise could be out before the end of the year.