Lubbock, as well as Amarillo, can be considered politically conservative and solidly Trump country, but they are “western” not “southern”. Big psychographic difference, if you understand both areas. And both cities weren’t founded until long after the Civil War.
To further the overall thread, it might be useful to dissect how KROI is doing with its Gospel format in Houston, which is a very similar market to DFW. Note that the previous incarnation of Gospel on KROI 2006-11 ultimately failed.