Main reason to add Greenlight is to be able to support multiple apps working with the same node. So it was more the hybrid (node on cloud, keys on device) we found appealing.
I wrote about it here: 

https://medium.com/breez-technology/get-ready-for-a-fresh-breez-multiple-apps-one-node-optimal-ux-519c4daf2536

bitcoin

I'm Roy Sheinfeld, the CEO & founder of Breez, in love with the Lightning economy, AMA!!! ⚡

Thanks brother 🙏❤️

Main reason to add Greenlight is to be able to support multiple apps working with the same node. So it was more the hybrid (node on cloud, keys on device) we found appealing. 
I wrote about it here: https://medium.com/breez-technology/get-ready-for-a-fresh-breez-multiple-apps-one-node-optimal-ux-519c4daf2536