Nice rig! I've got trijicons on two of my pistols, including my duty piece. I need to try a Deltapoint sometime.
The trick to using the dot is not to focus on the dot or the sights but to focus on the target and superimpose the dot on it, both the dot and the target will be in focus. Also, keep both eyes open. If you are familiar with using red dots on lkng guns it works the same way. It takes some practice and you may need to make changes to your presentation but it is worth the effort.
Let us know how it shoots for you!