My fear is the middle will be a problem for this D all year. I'm rooting for Davis, but a true FS - until Davis can prove it - would greatly help the pass D. Ware will become more comfortable in coverage - i.e. getting jams on the slot - and it seems we may have the best corners Dallas has seen since Smith and Sanders, but if Davis cannot show he has the ball skills and is fluid enough to be a FS, the Cowboys could not allow this weakness to cost them games.
I'm pulling for Davis, but I'd have him an a short leash.