The trips feature in Inbox is incredibly useful, but I hated having to go back to the email app and scrolling till I find the trip details. So I'm glad they came up with a new app to manage your trips.
I use the "pin" feature for all my travel information. It's not a complete fix, but it does cut down on the scrolling a lot!
I'm generally happy about Inbox/Google Now features, but this one was a small annoyance in my trip this month.