TexasCHLforum.com

The "premises" definition that excludes parking lots ONLY applies to those locations listed in 46.03 and 46.035.

A private entity (business or residence) not listed in those sections CAN prohibit parking lot carry.

The duty to inform a LEO that you are carrying applies regardless of under what authority you are carrying. (411, govt code, or a non-applicability under TPC 46.15)

§ 411.205. DISPLAYING LICENSE; PENALTY. (a) If a
license holder is carrying a handgun on or about the license
holder's person when a magistrate or a peace officer demands that
the license holder display identification, the license holder shall
display both the license holder's driver's license or
identification certificate issued by the department and the license
holder's handgun license. A person who fails or refuses to display
the license and identification as required by this subsection is
subject to suspension of the person's license as provided by
Section 411.187.
(b) A person commits an offense if the person fails or
refuses to display the license and identification as required by
Subsection (a) after previously having had the person's license
suspended for a violation of that subsection. An offense under this
subsection is a Class B misdemeanor.

And I would not count on the fact that a police officer would know he should not arrest for first offense of fail to notify.

I posted here about an incident I had with DPD regarding this.
:(