Can you equip the Dorin Obi from Safehold quest to permanently give yourself earthday/earth weather, and essentially make these herald's gaiters, without the 20m they are for the one that has every sold on my server?
The belt doesn't give permanent earthday/weather, it makes the effects of earthday/weather guaranteed. The day and weather give a random 10% bonus to earth-based spells, and the obi removes the random factor so it's always 10%.