Using "normal" powder coating excludes the option to use a matte finish powder coating. If the service you are using for the coating has not presented to you this option, they are derelict in their business.
Additionally, there are powders available, when properly applied, provide for a wrinkle finish, addressing the textured consideration in your post. Another texture available is an irregular "beaded-up" finish, which consists of random small islands on the surface interspersed with matte finish flat portions.
Obviously, if you are performing the powder coating, it's not dereliction, it's simply not being aware of the options available.
source: direct, frequent contact with personal friend's powder coating business