Even though I'm a Volca enthusiast, to me the Kick is a rather underwhelming instrument. As a kick sound generator it has some uses, but I find the humble volca beats, with its 3-knobs engine, more suitable for most applications. Apart from that the Volca Kick can be used as a (sub) bass machine and as a sine whistle synth, and it's versatile enough to produce a few weird noises... but that's all.
The "accent" feature is too clicky, in an unpleasant way, and when the instrument is powered from AC there's a bit too much background noise.