Can the Vervet Monkey and Samango Monkey Hybridise?

The blonde samangos of Cape Vidal were first brought to my attention when reading  Thomas M Butynski and Yvonne A de Jong’s 2009 paper: Three Sykes's Monkey Cercopithecus mitis × Vervet Monkey Chlorocebus pygerythrus Hybrids in Kenya. While some scientists have suggested that these blonde samangos are samango monkey X vervet monkey hybrids, Butynski and de Jong suggest that they are more likely to be erythristic or partially albino. Given our research to date on the alliances formed by vervet monkeys and samango monkeys in the midlands, and noting this phenomenon elsewhere, the feasibility of hybridisation between these two intergeneric species that are remarkably different as far as the amount of chromosomes they have, their behaviour and the different ecological niches they inhabit is never far from my mind. It is important to note that in the unlikely event that hybridisation may occur between these species that are genetically distant, a hybrid would probably be infertile. However, such a phenomenon would offer valuable information about populations.