I've run into the use case while traveling abroad where I don't have a computer (out of paranoia / lack of security).
Internet cafés are everywhere but setting up the perfect dev environment takes so long... so far it's made development fairly impractical, especially because they're often very old Windows machines. I've had good experiences with C9 so far, though I'd like to see how it pans out under that use case.
>setting up the perfect dev environment takes so long
It is a Not Unreasonable (TM) time investment to automate setting up your dev environment in the way you would a prod environment. emacs.d and other dotfiles in source control, masterless Puppet or Chef on your laptop, etc. If you're willing to go as far as installing Vagrant manually, the rest can be made pretty easy.
I've run into the use case while traveling abroad where I don't have a computer (out of paranoia / lack of security).
Internet cafés are everywhere but setting up the perfect dev environment takes so long... so far it's made development fairly impractical, especially because they're often very old Windows machines. I've had good experiences with C9 so far, though I'd like to see how it pans out under that use case.