Mas, I am a big fan of your work and I salute you for your accomplishments. I have both your books on Concealed Carry and Combat Handguns. You mention a little bit about the Serpa holster in your book.I have read about accidental discharges and the releases not functioning. I practice daily drawing the gun and reholstering and I personally cannot figure out how the accidental firing is occuring. I carry with this holster when wearing a jacket or long untucked shirt. What is your opinion about the safety of this holster? Aside from the thickness, I personally see no major flaw or disadvantage. If there are alternatives to this type of retention (Safariland ALS) what do you recommend? What are the pitfalls?