Here's a short video that explains the mechanics of the skulk movement in build 201. I think it's pretty great. When you get the hang of it, it's almost too powerful. Give it a chance before barking at it. :)
And then, how it works in real gameplay. In this video I start with no upgrades, then start using carapace at some point, and eventually leap and silence. The first clips are a bit bad but it gets better towards the end. Cue cheezy music. Cheeeezy.
720p available when youtube stops being a butt.