Guild Wars 2

Hello. I was wondering with sigils like the minor sigil of geomancy, which has an effect when swapping to that weapon that grants you something, will activate when changing attunements or if it is useless with an ele.

They will activate on attunement swap, yes. Keep in mind that on-swap sigils have internal cooldowns of 9 seconds, so you won’t be able to spam the effect by rapidly attuning.