Yes, it's fine to have both -- no objection from me. However, switching keyboard layouts tends to be difficult for most people, and the gains are generally rat

Yes, it's fine to have both -- no objection from me. However, switching keyboard layouts tends to be difficult for most people, and the gains are generally rather small. Many if not most users would be better off devoting the same amount of time to improving their touch-typing on QWERTY than to switching layouts.