I didn't even realize Deviljho was out. How are the weapons and armor you get from him?
Most of the weapons are really good (Apparently the Light Bowgun sucks though). They have very high raw, high elderseal, good dragon damage, and white sharpness with handicraft. They do have negative affinity, but stuff like Weakness Exploit can easily compensate. The Hunting Horn is easily one of the best general purpose horns in the game alongside the Bazelreid Rookslayer, Desolation's Overture, and Heavy Bone Horn 2. Attack Up L and Defense Up L are great songs and the horn has very high damage.
All the weapons have unique models and animations too, which is nice when so many weapons in World use the same base models.
The armor is a mixed bag (though to be fair, that's most armor). No armor set bonus is disappointing. The Alpha version provides Handicraft +3 but has no slots. Lookswise, I like both male armors and the female Alpha armor, but the female Beta armor looks like garbage. On the plus side, the wrestling belt looks amazing when mixed with other armor.