Uh. The fact that you can chance class by changing your weapon it would be dumb to be forced to be naked just because you changed your weapon.
Theres no reason to Implement Restrictions on Crafted gear because none of the crafted gear gives "Super awesome Bonuses" like HLNM and End Game Quest drops can and will in the future. I can agree some armor should be special and you can only use it if you have earned it, But crafted gear should be so abundant that it doesnt matter what your rank or class is.