I use both of those tools. Took awhile to get wellenrieter to work, and it's still nto tested, but at least it's reconizing my network card now.
The real appeal of this app for me is that it converts between asci and hex. So i can sniff headers, and see exactly what is in it all at once.. Instead of trying to log packets with kismet, then start up ethereal to analyze them. (I don't have a working version of ethereal on my Z anyway)
and since it's java, this app should work with all versions of the ROMs, for both 5x00 and clamshell series.
So I gues I'm less interested in just wardriving with this app... it's useful for after a netowrk has been found, to see what is going on, and assist in site survaying. (wich the other tools aren't really fufilling in this way)