I've made a test,if you can dublicate your sacred folder and in one to put reborn choose your hotkeys then in the other one "Vanilla" you just have to move the settings and the SRhotkeys file.Then you will have what hotkeys you want on Vanilla,not just that ,I believe you can install Reborn Mod ,make your hotkeys and then just play normal vanilla in the same folder and the Hotkeys remain(I didnt try this)you can test it