The WANdisco binaries are distributed via the package manager too (yum, aptitude etc). The script that is provided for WANdisco binaries simply updates the sources so that the our Subversion binaries are installed rather than the distributions default ones. This means you get the most up-to-date version of Subversion rather than the older packages from the OS. We've also provided a bit more sample config and hopefully enough information to make set-up easier (In this case it seems perhaps not...)
Konzo, you haven't said which Linux flavour you're installing on so it's a little tough for me to help you with the specific setup steps you need next, but if you let me know I can offer some further instruction (or point you at the relevant documentation). Subversion isn't hard to setup and use in any case, so it should be uncomplicated for me to help you further.
Git and Subversion are certainly different tools and in my opinion are suited to different applications and methodologies. While Git is undoubtedly flavour of the month in some quarters, I'd argue strongly that it isn't set to replace Subversion at any point in the foreseeable future for many shops. This thread probably isn't the best place for that long running debate though
As I say Konzo, lets have a bit more information about what you're using and what you've done so far and I'll be more than happy to help if no one else does first.
WANdisco Subversion Support