Yeah, my colleague and I are building some 15mm OGAM armies for quick lunchtime games, and I was tempted by the Arabian stuff myself – mainly because I had a great Roc figure in mind...
Actually, now I think about it, D&D prepaints offer a fantastic set of cheap(ish) options for 15mm OGAM – the Efreeti, Sand Giant, Djinni and Marid models are suitably 'Huge', and the more human-sized Genasi and Mephit models are great for 'Big' Jann.