No, that breaks the 1st and 2nd rules from the docs:
It is your application’s responsibility to manage state changes to OpenGL ES objects when the sharegroup is shared by multiple contexts. Here are the rules:
- Your application may access the object across multiple contexts simultaneously provided the object is not being modified.
- While the object is being modified by commands sent to a context, the object must not be read or modified on any other context.
- After an object has been modified, all contexts must rebind the object to see the changes. The contents of the object are undefined if a context references it before binding it.