RR: unfinished
The way I see it, Swampy Beta 2 is called that because this was the "Beta 1" - because this, also available from Boomslang's idrive, is the less developed version of the idea.  It still has the boring brown wall round the map, inherited from SLAM's Forest.
          So, unless you are a map completist, who just has to have as many versions of as many different maps as possible, there is no real reason to acquire this one.