Love it. Always wanted to have something like this for the Google Watch. Easy to stay update and receive alerts, but dont need to setup a second phone/device.
I am building something like that, but currently only targeting public/private repos and releases. Would be possible to pull more settings from the api, more difficult for private repos though. Hit me up at hello@ambersignals.com
I have a second Nokia phone that keeps sim cards from other countries that I dont need all the time (e.g. 2FA). Receiving txt is free and just need to top it up once per year to keep the number running.