Report Offensive Message

So, out of curiosity I dl'ed from the SOPHOS link provided. It did not install a "portable version" rather installed on my PC. I could get a "start in directory" on a flash drive but the interplay between the two was not clear and I didn't have time to check it out. Not happy about the installation technique! Could be user error, granted, but I have lots of success with PortableApps type software and this didn't give me options. Is a portable version truly available?