I got them both. I carry the skeletool cx in my front left pocket and sometimes even forget its there. It got decent pliers, flat and philips bits and a 154cm blade wich i find usefull for my daily tasks. I also carry my Wave in leather skinth with bit kit in my bag. The Wave is more bulky and doesnt have pocket clip wich you can by seperatly. Of course the Wave offers more tools but I rarely find myself needing a saw in an urban/office enviroment. Another plus for Skeletool is that just a cool looking tool. It all depends on how much tools you will use. Ofcourse you can also consider getting a Sidekick or Wingman wich are lighter then Wave, comes with pocket clip and offers more tools then Skeletool.
Hope that helps you.