In reply to drolex:
Today, the traverse is equipped with fixed ropes and hence trivial if they are not covered by ice and trustworthy. If there is a solid snow or ice cover, then it's usually not that big a deal too, even without access to the ropes. Sometimes, bits of them sticking out can at least be used for protection.
In this situation, and given the fact that the '38 route is only climbed in winter these days, the rock grade of the traverse is somewhat irrelevant. AFAIR Kaspar Ochsner, the legendary Swiss climber did it free in rockshoes and said that it was about 7a - take that with a grain of salt though.