The last version of GPGTools I looked at had the irritating habit of always installing its own copy of GPG into /usr/local and not letting me use my own version (e.g., from Homebrew). Is this still the case in version 2?
It would be far cleaner if it was more self-contained (e.g., included GPG inside its installation bundle), and then let the user pick an alternative OpenPGP installation in the preferences.