Knoppix-installer is the better script in my opinion. When you use it it tells you that some setting can only be changed by editing a saved configuration file.
Run the script, configure the installation and then save it.
Navigate to /home/knoppix and edit the file with a text editor.
Change filesystem type to reiser, default=ext3. Swap config can be altered although knoppix does this automattically at boot up anyway.