Great question, and the answer is no. 0802s can be liaison officers, 0402s can work in the S-4, 0602s can work in S-6, etc...but nobody can be a platoon commander but 0302s...or 0203s.
Sorry, buddy, if you missed IOC, you ain't going to Recon. MARSOC is trying to compensate: the first non-03 MSOT team leader was just assigned to an MSOB. But there is still a lot of work to be done before non-03s will be looked at a true meat-eaters.
(Which is why there are a bunch of non 03 guys going to SF...)
Nomad didn't read the question. He's talking about off-the-street enlistees. Question was asking about Officers. FTFSI.