That's for use of force in defense of a person. What about in defense of premises from burglary? Also, the limitation on civil suits is not specifically for a CCW holder, it is generic for all use of deadly physical force, provided such was justified.
Yes, the civil immunity is for any with or without a CHL in TX.
My biggest problem with interpretation of law is the overlap [I'll use that word for lack of one better] of various codes. For instance TX penal code section 9.41 states:
Sec. 9.41. PROTECTION OF ONE'S OWN PROPERTY. (a) A person in lawful possession of land or tangible, movable property is justified in using force against another when and to the degree the actor reasonably believes the force is immediately necessary to prevent or terminate the other's trespass on the land or unlawful interference with the property.
Here, force is not defined as deadly force, which are two different things. But, PC section 9.42 adds to this, saying:
Sec. 9.42. DEADLY FORCE TO PROTECT PROPERTY. A person is justified in using deadly force against another to protect land or tangible, movable property:
(1) if he would be justified in using force against the other under Section 9.41; and
(2) when and to the degree he reasonably believes the deadly force is immediately necessary:
(A) to prevent the other's imminent commission of arson, burglary, robbery, aggravated robbery, theft during the nighttime, or criminal mischief during the nighttime; or
(B) to prevent the other who is fleeing immediately after committing burglary, robbery, aggravated robbery, or theft during the nighttime from escaping with the property; and
(3) he reasonably believes that:
(A) the land or property cannot be protected or recovered by any other means; or
(B) the use of force other than deadly force to protect or recover the land or property would expose the actor or another to a substantial risk of death or serious bodily injury.
So, if it is "during the nighttime" and "the land or property cannot be protected or recovered by any other means" [insurance for example] you can go for it. But daytime or if you have insurance that will replace the property in question, it's not legal to use deadly force.