I think Svartorm said it well... Grice had some deadly looking GnP, but I think it was just his lack of experience that let Etim get back up... I don't see Sherk making a mistake like that...
I think what little we saw of Etim's striking looked crisp, he seemed comfortable going for subs from the bottom, and he proved that he could weather a pretty good storm... But like Rogan mentioned, he was a little too aggresive when he came in to try and finish after he rocked Grice with the punch, and a mistake like that against a GnP monster like sherk could cost you the fight and an orbital bone or two

I think especially if he can utilize his size, the kid's got real potential