I think you're fine. The handgun is concealed inside the holster.PC §46.035. UNLAWFUL CARRYING OF HANDGUN BY LICENSE
HOLDER. (a) A license holder commits an offense if the license
holder carries a handgun on or about the license holder's person
under the authority of Subchapter H, Chapter 411, Government Code,
and intentionally fails to conceal the handgun.
Nobody will notice anyway.