I tried using it, but all the "pretty images" I found obnoxious. Although I do like the "sleep" style options, where I can put stuff to sleep and get notified later. I noticed my email throughput had decreased significantly using Inbox.

I receive somewhere between 75 - 200 emails a day. I need to quickly scan over the email titles + bodies and just remove emails that are not necessary to respond to. Inbox doesn't really provide data as clearly. Though, if I wasn't receiving an email every few minutes Inbox does seem like a really awesome choice.