Bought 5 years ago now it's stayed on my backpack front shoulder lodged by my hydration access, that way if I'm incapacitated to a large degree by snowfall / having fallen & bounced whilst boarding it only requires minimal movement to get it to my lips, necessary if you are in great pain!
Loud & has taken the knocks over the years without wanting, good purchase, as it's metal i'm able to throw my pack around without worry that this will get broken unlike plastic versions, which may degrade when exposed to long term abuse, via the elements.
Ideal!