Imo Shocking is not worth it. What are you going to do after GCD? You shouldn't even use Lava Lash, terrible spell, little damage, and most of the times you are autoattacking, using stormstrike, frost shock which should be the main shock and using totems, also using Maelstroms to heal back. Glyph of Stormstrike then has a reduced value too. That point is spent better in clear casting. My advice is going with Glyph of Lightning Shield and going with the Lightning Shield build, helps doing more damage to plates, as it does nature damage. Plates are the main concern when playing Enha, imo.