Question about Warden Tanks in endgame content

Hello,

I started playing ESO 4 monthes ago and I play a Warden. I recently started doing trials as DD and thinking about switching to tanking with warden for group content. After a brief search in the web I got the idea that wardens are most valuable as healers in end game content and tanking is generally reserved for DKs, Arcanists and Necros.

Are wardens viable tanks in veteran trials/end game content?