First let me say I am a TX resident and CHL holder.
That said, I oppose the TX Open Carry initiative for one key reason:
If open carry is legalized, there will be a huge surge in locations where carrying a firearm (concealed or not) is illegal. Merchants who previously didn't know/notice/or care will now be pressed into taking sides on the issue and a lot more carry-prohibition signs are gonna go up.
I don't think armed citizens in fewer places is an improvement.