I can't confirm right now, but I recall it NOT working by default, anyways. I have a standard OTG cable, but not with me ATM - it's either a simple kernel issue (ISTR that the iPod doesn't appear as a simple drive) which could be fixed by a custom kernel or some userland USB fiddling ("device xxxx:yyyy is of class generic drive! Really!" OR the OTG port doesn't supply enough current, in which case you either need a custom cable with the power pins broken out or a powered hub in between.

Once I'm back home I can try a powered hub with my OTG cable (note that a hub in OTG mode requires a modified kernel (whitelist disabled), too)