I like it after playing around with it, it seems useful... or usetiful. It feels well designed, easy to figure out, and allows custom css - all good. I haven't integrated it yet, but there's a chrome extension that lets you try it out before integrating - also seems usetiful. My only wish is that there are more embedding options, like importing as a js library instead, that way wouldn't have to load an external script - that way it can work on sites with strong or hard to change CSP policies.