Out of the 9 elite specialization armor pieces that you get for completely unlocking the elite specialization only 2 can be salvaged.
CAN be salvaged:
Reaper’s Hood
Daredevil’s Scarf
CANNOT be salvaged:
Tempest’s Loop
Chronomancer’s Epaulets
Druid’s Shoulderguards
Scrapper’s Mask
Dragonhunter’s Gauntlet
Herald’s Shoulderplate
Berserker’s Helm
Albeit a minor issue, it would be nice if it could be fixed.