Small update here.
We have created ChipMixer plugin for Electrum. It allows you to tumble your bitcoins with us without leaving your wallet and it is even easier to use than website (prefill forms, creates new wallet and imports private keys for you).
You can check readme and screenshots here:
https://github.com/chipmixer/electrum/tree/plugin/plugins/chipmixerPull request is pending, maybe it will get included in next version of Electrum.
WOW. Now thats awesome! This just makes the regular user want to use your service just from how easy it's starting to become.
I never tried a mixer service before just because I really never needed and IMO it's too much work for no especial return if you don't really care that much about the extra privacy.
But being able to do everything from your wallet just by following a few steps really makes me want to try out. Good job ChipMixer!
Edit: Is it possible for me to download and install the plugin myself to try on Electrum while they don't include officially? I tried to put the chipmixer folder in my Electrum\plugins folder and the option doesn't show up on Tools -> Plugins.