Sorry about that, let me try to clear things up:
Cryptic itself is a online file storage, so there is really only the cloud version of Cryptic (for now).
1. The kickstarter is to fund development and servers for the online file storage + web app.
2. Anything client side will be open sourced, and can be self-hosted. You could host the Cryptic site right now locally, and use a local version to interface with cryptic servers.
Cryptic will have a browser extension that will automatically verify the received code against a signed hash (also easily verifiable) on the open source repo. It is fundamentally different than Lavabit since everything that interacts with raw data is open source and verifiable. Someone is going to notice if the website is tampered with.
For vim users, tim pope's fireplace plugin provides an integrated "quasi" repl in vim: https://github.com/tpope/vim-fireplace. The only downside is I can't seem to figure out how to use it for clojurescript. Also vim-slime is amazing for general purpose sending to another tmux-pane: https://github.com/jpalardy/vim-slime. I use vim-slime when I'm working with clojurescript.