Why not? There's a `File: open file` command, and then there's the navigator to look through files that are in the workspace. You can also add files to the workspace from the command pane with `Workspace: add file` or `Workspace: add folder`.
In Sublime, if I want to open my Gemfile(at root), I just go
Cmd+T: Gem
And it's selected.
If I want to open my admin_controller, located inside of /app/controllers/, I use
Cmd+T: adm
And it's selected.
If I wanna do my Admin Controller test(spec) file, at /spec/controllers/admin_controller_spec.rb?
Cmd+T: adm sp
This is all a ton faster than what I'm seeing currenltly in Light Space, where I'm essentially forced to use my mouse, or OSX's poor keyboard controllers for open menu navigation.
(Disclaimer: I'm the author of claire)