Here's a nice holster for Speed Shooting with Semi-Auto style pistols.

http://www.safariland.com/DutyGear/product.aspx?pid=013

Many speed shoots and IPSC require holstered starts. Scroll down to the video clip at the bottom of the page.

Found one on an auction site item # 110528915844

Do make sure it's 100% suitable for you pistol before purchasing.

Good luck, Phil