Ah--more responses to the thread. While I'm intrigued by the express sight concept, I have settled on the Heinie slant pro, with the .155" rear slot.
Sunray---I never considered mixing and matching fronts and rears. Heinie, and others, offer different slot widths as options and they have reasons for doing so. I know IDPA is a game, but it is one game that endeavors to throw a few situations at a contestant that develop skills that may well have real world applications. I take your point that a telephone pole isn't the ultimate in cover, but if you don't believe it amounts to any sort of cover, I'd disagree with you. More importantly I think, IDPA conditions one to certain very useful real world practices such as seeking cover when it is available, not moving between cover points with an unloaded firearm, etc. And you would never convince me that it would be a detriment to know how to hit with your primary defensive pistol at 30 yds, even if shooting an assailant at 30 yards would get you unwelcome legal scrutiny. 2 questions come to mind: Don't you think being able to hit at 30 yards increases your ability to hit at closer distance? And if someone was shooting at you from 30 yards away, would you shoot back, or take one in the chest to avoid being the target of subsequent legal scrutiny?
While I would never initiate a shooting action without imminent mortal danger, I don't think any particular # of yards of separation would make any difference to me if someone were shooting at me.