Swipe to preview comment

Very happy with the new comment preview feature, and think it could be accessed even faster than through the new edit bar ellipsis menu.

When composing a comment, the comment (or title of the post) you're commenting on is shown at the bottom of the screen (priceless feature, keep it forever!); I'd suggest that swiping this area to the left revealed the "comment preview" icon, just like when swiping to upvote a post or comment reveals icons, and releasing the swipe takes you to the preview of your comment.

Relay for Reddit had a similar functionality, which I used all the time.