Having multiple enchanters of different armor proficiency has been extremely useful this tier if you spend a lot of time on Timeless Isle. I have cloth, leather and plate wearing enchanters and have been able to sell hundreds of sha crystals from the timeless gear collected while keeping 10-15 stacks on me in case something came up.
^ this. I have 2 enchanters so I just run around timeless isle killing all the rares and mobs and everything I can to get tokens for sha crystals. It's probably not the fastest method but when you're after the 535 trinket or the 100k coin mount or exalted rep or whatever making a good bit of gold on the side doesn't hurt.