If memory serves, Houston Holsters are Rebadged Fobus with the addition of suede lining. Is there a link to the product ?
Did a google and found them on the Bersa web site. I found a listing for the Steyer M9/40 but it didn't specify A1. May be for the old M series.
Nadda! I wrote them an email in regards to the M-A1... it's a no go as per my email'd-reply: "Sorry, no Steyr holsters in the works"