GardoneVT, many people do rotate the hoods forward on SLS holsters, either all the time or upon approach to danger. I don't care for the practice. A holster that relies solely on the SLS system for security has all the retention of a bucket with the hood forward, especially a holster that accommodates a WML. Moreover, if you vary your approach (e.g.: hood forward on car stops, but secured when on domestics), sooner or later, you're going to find it in the wrong position. Better to learn the manual of arms so that you consistently release retention devices on the draw.
That said, some officers and departments use holsters with no hood and depend on the ALS system for retention and release.