Same permit path as any other covering
A residential metal replacement or overlay is still a Houston roofing permit: iPermits, the building permit application, the declaration, and CE-1104 or CE-1109 as the scope requires.
Plan review and inspection are listed as required on HPWCODE1140. The permit and worksheet stay on site. Metal does not skip that path.
Torch work pulls in Standard 11
Some metal details are torch-applied. Houston Fire Department LSB Standard 11 applies to roofing operations that use a torch or an asphalt kettle. That is a fire-official approval and method question, not a marketing slogan about "standing seam."
Ask the contractor whether any torch or kettle will be on your job. If the answer is yes, ask how they meet Standard 11. If the answer is no, get that in the scope so you are not surprised on the day.
What we are not going to tell you
We are not going to publish a service life figure, a wind rating, or an energy saving percentage for metal roofing on your house. Those numbers are specific to an approved assembly and a specific address, and generic versions of them are marketing.
For design wind speed at your address, the ASCE 7 Hazard Tool returns the actual parameters. That is a better answer than a number we would be inventing.