Finally, True Grit for sanity; exactly what Guardians have needed since the game released.
But just how good is it really? A deck slot is pretty valuable, and given the array of allies who can provide a similar amount of soak while also providing other effects (and being cheaper, sometimes), it might struggle to find a space. Its other issue is that your allies generally have more sanity but less health than you, so True Grit is still your best choice for the team.
That being said, I think Mark and Zoey are all about this card. They have the least access to high-sanity allies from other classes, so this in-faction soak is a godsend for them. Additionally, Roland could use it to shore up his beleaguered sanity, and Lola might want it for the same reason.