Sure but you also risk Omegon dying without ever revealing any results. If Omegon roleclaims and survives, we get 3 nights of results to reveal in the next day phase. Even if Sheed dies immediately, we likely have enough information to win the game through combining the Omegon claim with the Harrowing. Keep in mind that a confirmed Omegon can not only confirm their green checks, but also we can semi-confirm more people if any Legionaries can reveal who Omegon targeted (prior to Omegon revealing this information). As in, if Player A says that Omegon targeted Player B in N0, and Omegon confirms this, then Player A is almost certainly civ. Whereas, if Omegon dies (which, in the no-claim scenario, is more likely than Sheed dying in the claim scenario), we've turned a near-certain win into potential defeat with the total lack of information to work with.