[quote=Mtntopview]
He'll probably store it elsewhere, merely to keep Megatron from getting to it (God knows what would happen if he did)
[/quote]

Well, the sliver would either react violently with the Dark Energon, or become compatible with it and make Megatron nigh-unstoppable. Also, storing a fully sentient energy being isn't as easy as it might sound. Actually, that doesn't sound easy at all. And yet, it's even harder than that.