Its actually not too bad, especially in Summer when the weather is good. I think a lot of the accidents are from Winter, with bad avalanche conditions, or when it's wet/icey - I know there have been a few skiiers caught out (even when there's only a little snow). Definitely not anything near a mountaineering route.
Lovely walk though (and great views down the Matukituki)!
We bivy'd out - I got woken up in the night by a Kea pecking my toes. They're definitely cheekier than Kea in other bits of the country 🤣