[quote=@Cu Chulainn]
<Snipped quote by ConstantlyComic>

I think he's pretty usable, at least for Hisoka, whose magecraft is just basic, and has a bit of morals as well. I hope you do find a Master that will use him as much as you expect him to be used, though!
[/quote]

The main problem with Moses is he has to go either go against his personal morals or believe that there is no other option to be at his maximum effectiveness (that is, use his Noble Phantasm).