I've googled some fackts about weapon enchantment proc
1. Same enchants on different weapons has mutual CD even on different bars (so if you have 2 fire dmg ench on two destros they will stil proc only once for CD time)
2. Weapon/spell dmg enchantment proc only on lights\havies not on skills
3. Only main hand enchant proc on DW skills (exept of blood craze).
4. DW lights proc in main-off-main loop.
So I have some more questions
If Crushing enchantment proc on skills or also only on lights\heavies?
How do enchants proc on AoE skills? And what target will they apply?
Can enchants proc on target with non dmg skills (e.g. elemental drain)?
Will both enchants proc with DW heavy?
Will DW offhand enchant proc on light-skill(s)-light sequence?