[quote=neko_sama]Also,is a half-breed okay?[/quote]

The bar for acceptance for really off-kilter character concepts is proportionately high. Wow me and I might accept it. Toss something up that's lame or even mediocre and it will be a no go. Characters like this are challenging to pull off, so you essentially have to prove to me you can do so.

Crossbreeds would be almost nonexistant for the following reasons. Sex between species is taboo among the fey of both courts (and punishable by banishment within the Seelie realm). The species are highly diverged genetically, far more so than any human race or ethnic group, more than even humans and neanderthals. For this reason offspring are generally impossible or stillborn. Those who are conceived would all be sterile to a one and many would be born with some kind of physical or mental abnormality. 

As far as glamer, a crossbreed might have no natural glamer as the unnatural melding disrupts its inheritance from either parent. More rarely a crossbreed might inherit one or both of his parent's hereditary glamers or they might merge together into a completely unique kind of magic.