I have not tried this canteen however an excellent topic to chat about.
Many years ago during my backpacking days I used a steel GI canteen. When we moved onto the boat I gave most if not all of my backpacking stuff away.
Several years ago I needed a canteen again so I purchased a plastic type GI canteen. In short - I HATED IT! The liquid put in it always seemed to have an off taste.
When I put my BOB together around 2010 I went back to the
GI canteen and cup in stainless steel. So far I love it except the hot drinks I drink out of the SS cup does not hold coffee at a good temp. Since I use the cup often to heat water then pour in Starbucks instant coffee I am OK with it.
Actually I use a "stick" of Starbucks coffee (This is how it comes) and a packet of 3 in 1 Cambodian/Vietnamese instant coffee into 8 oz. of hot water. I use G7 or Vincafe brand 3 in 1 coffee although there are other brands out there.
Anyway, what canteen are you using and why?