Do you have a reference for a cluster bomb munition that looks like that?
AO-1Sch is one example. There are several others. I cannot dig out the exact one, but it does look like something which I have seen before. Russian or Chinese by the way. Just cannot remember the exact reference.
I can't really think why anyone would design one in such a low-drag form
Russians do - there is a number of submunitions for their newer multiple rocket launchers, etc which are closer to a conventional bomb in shape than what USA or UK refer to as a typical cluster bomb submunition. I believe the Chinese have copied them as well.