well... I just don't see C grab working as a tick throw since it has like 30+ frames of startup animation after the super flash. Maybe if it was used to beat an anticipated punish or something... but it can easily be reacted to and punished if you're not using it for its invulnerability. If you have a really interesting setup, then post it and maybe it'll be worth noting in the wiki.
And as for s.CD cancelled into drink, it'll probably work well against lots of characters, but like you said some can punish it for sure. I've done only a couple of times and I don't think I've been directly punished for it (when s.CD was max range), but I never really tested just how punishable it is. I can look into it.