424 (no merits): 49.64
440 (merits): 51.4
447 (+hands): 52.17
454 (+hands+faith): 52.94
457 (+hands+faith+bruiser): 53.27
i.e., if you aren't using Bruiser, don't pair Faith/Tantra hands. You'll only want to use Faith and Bruiser if you're using both of them and hands, and that's certainly a debatable choice.
Obvious upside: base dmg =1.
But it comes with a lot of downside in:
(a) the lost stats on the earring you're giving up,
(b) the other good stats you can get on neck gear (Rancor's crit rate, Calcitrant Stole's Kick dmg and slightly more atk than Faith, etc), and
(c) Subtle Blow -10 from the earring
Personally, I'll stick with Tantra +2 hands and my usual Calcitrant/Moonshade. Other less common setups are conceivable too (e.g. Faith, some non-Tantra hands, no Bruiser). Maybe with stuff like the upcoming new Denali pieces tweaking haste builds this would be more viable, guess that remains to be seen.