Hi Scott, there's a still image on the top of the blog post that shows the particle wipe. However, the presets weren't designed to give a specific look - the idea is that they provide a 'quick start' for creating wipes by using expressions to minimise the number of keyframes you need to create. But the actual look of the wipe is very much down to the user (I just used one of the bundled Trapcode wipe presets).
If I get time I'll record a little video tutorial showing how they're used as that will probably explain the concept better than words :-)
Cheers,
Phil