I use Tower daily, and used the Tower 2 beta for a bit. I have to say I think they are missing an opportunity. There are a few cool new features (like autofetch) but for the most part, the upgrade smacks of change-for-change-sakes not actual progress towards a good workflow. More clicks are required, keyboard-only navigation is tough, diffs are hidden by default.

One thing most of these guys do is simply smack a UI on top of a command line, rather than explore ways to manipulate the available data into a better workflow than you could possibly get via commands. the conflict wizard is a good step, but that is only part of the story. Repo's are full of data ready to be mined in ways that aren't just 'git pull' and 'git merge'. There is a visual file history, changes made per-person, etc.