I ended up going over on my first day in Austria.
Can't remember all the technical terms, but I was mincing down the slope facing down it, taking my time.
Caught the front edge in a lip and went over. I instinctively stuck my hands out and properly spannered my wrist. It was really painful for the rest of the day & rotating my hand was very painful.
Next morning I bought some wrist guards before heading off to the slopes & found that made my wrists felt a lot less vulnerable than without them. I landed a few more times on my hands (yes, I know I was probably falling wrong) but the wrist guards really helped.
As mentioned above though, they are quite bulky so you'll need a bit of space in your glove.
I can see how the theory of wrist guards shifting the energy to a higher point & causing a break in a different location works, but in my instance if I hadn't bought them I wouldn't have felt like my knackered wrist could have taken anymore amateur snowboarding abuse & probably wouldn't have done anymore for the holiday.
off to the hill tomorrow hopefully.
