mudsticks
Obviously an Aubergine
Innov8 have some great lightweight trail running shoes suitable for your purposes. Good sole units to stop slipping on steep terrain.
These are what I wear.
That's like claiming that you can't break your leg because it's got bones.
Err not quite equivalent.
Our ankle ligaments are designed to be flexible and strong, in normal uses, originally when we went barefoot.
You can break any part of you, with enough impact or trauma, for sure.
But normal, or even quite gnarly walking won't break your ligaments, under usual conditions.
It's only my experience (well quite a few others experience too) that mobility and agility is in fact enhanced in lighter shoes.
You watch your step, and foot placement, and generally have better awareness.
Otherwise fell runners would wear heavy boots for the stuff they do yes??