I imagine it would be distracting to someone who doesn't use it daily. For me, I know where everything is and what it does. It's optimized for efficiency, not cleanliness. Bookmark buttons are grouped by subject (mail, links, security & coding, humour, news, info, music, tv & video) and I know what each favicon is for. It saves me having to type the first few letters of a given URL, which works for me.