Heres definite fact and its on the crystal crafting restrictions thread to make sure, made by emman himself.
You can only add +5 offhand skill on an offhand and the armours. I know from experience because when I tried to get meteor 40, I couldn’t get meteor on orb but I got it on staff, robe, ring, head. Basically, the 5+mh skill can go on everything except (huge key fact) offhand weapon. For 5+oh skill, everything except the mainhand weapon can have that affix.
I don’t like it because it defy common sense but it is dq logic and this is dungeon quest. In some sense, it is almost like reality where one thing can be applied on weapon and armour but not the opposite weapon. For eg, one bullet is not compatible with every gun and in dqs case, mainhand can never activate an offhand ability so no adding it on mh.
Don’t like it but it is how it is.
So if he wanted 5+stealth on a bow, it just ain’t happening. Same with trying to get 5+ blinkstrike on vial but it just isn’t gonna appear. Read this thread before ever crafting. Crystal Crafting Restrictions