My current, or rather previous holster is ALS only. I wear it on a single strap leg panel with the flex adapter pulled all the way up. The hood is about even with the belt. I always felt that just the ALS seemed like not enough retention in a gun grab because it's lower on my body.
I can't go back to a belt mounted holster, so I figured when I went with the light, I'd go all out. I've got a couple ideas on how to cannibalize a strap to make it work.
DOUG, as for the draw and the shitty position. I push the hood down and forward, and allow my thumb to follow it down, which makes the ALS lever contact my thumb just about in the middle. My thumb is sort of parallel to the belt line, in a horizontal position. I then sweep the thumb backwards and it isn't really my thumb tip that pulls the ALS, but the joint that sort of snags it. I feel that a little stipling of the ALS will aid in this. I look at it more of a gross motor skill that instead of trying to hit the little button with my thumb tip, I'm grabbing it with the whole thumb. As I'm sure most of us do, I try to train with gross motor skills and stay away from fine motor skills. I also have large hands and tend to "fat finger" everything.