When I began building an "Arab Conquest" era army, in February last year, I settled on a North African Arab army (132 in Art de la Guerre) not least because it offers steppe terrain and camel troops.
Needless to say I got sidetracked into painting units for other Arab Empire lists, but I had began to dread preparing the Forged in Battle horses (see below). So I kept putting off these final cavalry. However, they are done now.