I installed it and it's a giant floating popup that's permanently on your screen. You can enable the "minimal" theme in the settings to turn it into a smaller-but-still-big pill shape. It doesn't look like there's a way to hide it in a context menu, at least not one I can see.

I don't fancy having a random floaty object in the way of my webpages, no thank you.

Edit: It appears to go away occasionally. This UX is unclear to me.