Gheb: You've done nothing to clear yourself, and Kevin is looking far, far, better than you. If Vyse flips scum, my inklings would be you or Omni for sure, so unless you have some trick up your sleeve to magically clear yourself that's exactly what I think the toss up between would be.
Now, Omni: Your question is actually one I've been thinking of all day. Obviously there are two possibilities: Medi included safe-claims or he didn't, both of which are entirely viable even from my perspective. My first inclination would be that scum don't have safe-claims, in which case a claim wouldn't hurt us and if anything help us. The other option I've thought of is this:
I'm not familiar with the series, but from the sounds of what Mac has said, Grimmer seems to be a relatively major character. This leads me to wonder, if scum had safeclaims, but Rockin chose to not use his in order to try to draw out what they saw as a potential power role. When he claimed he was very close to being lynched that day, and could have used a different claim than he was given in order to draw out the true holder of the character, and a potential power-role for scum to hit.
Right now though, I don't think a claim can really hurt us. We already have 3 dead PRs, another two claimed, and an independent coupled with(likely) 3 mafia. It wouldn't be incredibly unlikely that we have 3 vanilla townies as our remaining roles, and I'm not sure of any major roles that would fit after what we've already seen. Right now, there are 4 people who have not yet claimed. I think(and if you don't believe I'm town, looking at it from a townie point of view), a claim would be a good idea today. As I said, there's not much chance of outing any major PRs at this point, and if Rockin's claim of Grimmer was NOT just a ploy to draw out the real one, scum doesn't have safe-claims. I would be all for a claim of the remaining players in the following order:
1. Vyse
2. Gheb
3.Kevin
4.Mac
I think it's in towns benefit to do this for sure. If we're really lucky we'll get a couple CCs and be in good shape, if not, we'll at least have a bit more to work with finding scum/town.