Amuse bouche: Real BYOB in Texas?

There was a tremendous steak event up in Dallas this weekend -- more on that later. While there, someone mentioned what's been dubbed the "Dewhurst bill" in the Texas legislature. This would allow BYOB at all restaurants in the state. Current law makes BYOB an option only at restaurants with either no liquor license or a beer-and-wine-only license. Those with full licenses (beer, wine, and liquor) cannot legally allow BYOB. The merits (or lack thereof) of the current state of affairs will be the subject of a full post later this week. But this bill would be a major step forward for Texas restaurants. Why would anyone oppose it? People will eat out more. Is there any good reason supporting the oppostion? Nothing too legitimate comes to mind.