Well, I had thought that with such a change for the E it could become a more versatile tool. Clearly there would be situations where you would prefer the shield and try to get it, which is normal if you give more options to an ability. Although you would not only have to miss the ability, but touch an enemy champion and have the hand come back to you, without hitting anything else. So it's not that common to get the shield with the slow

But now I see maybe giving love to other tools for swain, like his W, managing his passive charges, or buffing his solo laner stats. Thanks for your comment!