Irrespective of the conditions of non-competition laid down in the contract, simultaneous work constitutes for both undertakings a breach of the worker`s duty of loyalty to his employer. It is on the basis of one of them, it is obvious that the simultaneous work for both competitors would facilitate the misuse of confidential information or the misappropriation of trade secrets. In the face of this threat, an injunction is useful. Finally, employers wishing to impose jurisdictional choice and selection clauses should exercise their elected jurisdiction as soon as possible without first participating in disputes elsewhere. . . .