As I did all that I wondered, If the weapon is cocked-and-locked and the SERPA lock released, can it be drawn with the hood closed? Yes, I know it seems a silly question, but there's enough room under the hood for the weapon to be carried hammer down and the 1911 is a relatively thin weapon compared to some modern day double-stack pistols. I had to test it out. Using the BLACKHAWK! training weapon I had at hand (the gray colored 1911 cocked-and-locked) I released the SERPA lock and tried to wiggle the gun out of the holster with the hood still locked shut. Try as I might, I couldn't get the gun out. In the end, I was satisfied that the design was properly balanced to keep a cocked-and-locked pistol in.
I did all that before I even took the holster off the duty-belt mount. Three screws secure it onto the duty-belt mount and four are used to secure it onto the "tactical" platform as shown in the photos. Switching it out took me about three minutes and the Glock holster I took off the thigh platform is now securely mounted to the duty-belt platform.
Shown on the BLACKHAWK! website with a suggested retail price of $102.99, a quick Google search found several dealers that have these holsters as low as $70. I've yet to be able to break one and with just a little training they are amazingly fast to draw from.