I don’t think we should have an amulet with unlimited uses per day. If we were reliant on a divine caster who’d selected it in preference to other options I don’t think it would feel quite as overpowered.
I must admit i dont see much difference in between picking a usefull cantrip, before other options ...
And picking a neckage, that gives us said cantrip, before other options ...
I for one am certainly glad this neckage is there, since i find party of 4 incredibly restraining, and if 1/4 of them would be allready reserved for either Cleric or Druid (wich we dont have) it would only feel like yet another lame atempt from Larian to force Shadowheart uppon us, rather than anything else. :-/