I was initially sad to hear of him being signed away, but then I got to thinking.
Clowney's was hyped up as our deep threat during camps. That's it, we didn't hear about his exceptional hands, or his ability to elevate over defenders to make a tough catch, or his ability to disengage from contact and make tough catches in traffic.
His entire hype was speed, and that was our perceived weakness.
Well thus far we've seen that the need for a deep threat isn't as glaring as people initially thought. Driver is quick and certainly has caught deep balls in the past, Gregorious has shown that he is great football speed, and can take short passes deep, James Jones has shown the speed to get deep that he wasn't supposed to have, and ditto Ruvell Martin. We also have K-Rob coming back.
I don't think Clowney's speed was as important as it may have been before the season, before we saw our WR group showing speed people thought was lacking. Best of luck to him, but to be honest this isn't a loss of any significance.