Rarely in good conditions. When it works it is an amazing ride.
You are standing right above Zermatt with a 600m drop below you. It starts with an exciting narrow steep section that gradually mellows out towards the valley.

Here Gama bootpacking just before reaching the top on a very good day.

It goes well on vert snowshoes for snowboarders but bootpacking might turn tricky on the steeper sections with grassy ground and some people prefer going around on flatter terrain.