You can actually still use a GUI editor with cloud-based development.
The majority of my code is stored on a Linode server. I use SSHFS to mount my working folder and edit in whatever editor I like (typically Geany). Connectivity is still an issue, but can be mitigated by tweaking the cache timeout.
I've had issues with sshfs not sending the proper signals when files are deleted or renamed. It can make it quite frustrating when relying on tools that watch the filesystem for changes (like precompilers or editor tree views).
The majority of my code is stored on a Linode server. I use SSHFS to mount my working folder and edit in whatever editor I like (typically Geany). Connectivity is still an issue, but can be mitigated by tweaking the cache timeout.