I chose to install from source, the process is (tested on SLES 10 SP2 i386):
- wget –no-check-certificate https://launchpad.net/bzr/1.10/1.10/+download/bzr-1.10.tar.gz
- zypper in python-devel python-xml
- tar xvfz bzr-1.10.tar.gz
- cd bzr-1.10/
- ./setup.py install
Now you should be able to run bzr from the command line.