Not for meI've used all manner of belay device from the Mammut Smart, mega-jul, OVO, and ATC. I finally got the Grigri and can say I don't like it for most of my climbing applications. They jam up on ropes over 9.8 and even 9.2 if the climber is fast.
I found the lowering slow or too fast.
These are neat for cragging, top-rope as it's easy to swap the device and safe. Although I often use a fatter (10-10.2mm) rope for that application.
Seems heavy and too single purpose to take into the Alpine.