Tea, especially green tea, in a titanium mug is, in my experience, utterly gross.
Maybe anodized titanium would work better? I don’t know what the chemistry behind the problem is, but even stainless steel kills green tea after a while.
It’s super light, about the same weight as single wall stainless cup. The mouthfeel is nice, hot coffee doesn’t make the titanium feel as hot as steel gets and the feel is more similar to ceramic than stainless steel. It cleans up really nice and truly doesn’t stain. I even used a dc transformer to do some custom anodizing on mine and it looks really cool.
I've got a Ti double-walled mug from Snow Peak that I use a lot around the house. The big strengths are light weight, near indestructability, and a cool Ti functional aesthetic. It's double-walled and holds heat well, but I prefer the "mouth feel" of ceramic or glass when drinking coffee, so I don't use it much for coffee.
Maybe anodized titanium would work better? I don’t know what the chemistry behind the problem is, but even stainless steel kills green tea after a while.