Well guys I think I've said my piece;) I think most guys are at least on the same idea if not for some small variations. It's looking like this thread might go into more "hostile" territory and I'll take that as my cue to leave;)
Seraph - The way you explained how you made your rigs so it only goes one way makes sense. For the way it was being described as a channel I kept thinking a U shape which would of course trap the safety on both sides and tend to take it back off safety as well. On the other hand with the basically half U shape, lacking a better way to describe it makes sense.
QKShooter - I'm not sure your age nor past but you may or may not have read Blue Steel and Gunleather by John Bianchi which has it's faults but is a really interesting read and full of pictures of holsters and designs that have come and gone. Interesting to the topic of open trigger guards is the older speed scabbards with open triggers. Also rather amusing with the current sensibilities of keeping your fingers off the trigger, in those days(not too long ago even:) it seems they were doing exactly the opposite in most cases. Granted he made a point that guys were starting to lean towards keeping their fingers off the trigger until on target in later chapters but still neat.
He also made a few suggestions on where he felt holster design was heading and I found it rather amusing that he felt that holster would get progressively more slender with less material. On the other hand allot of rigs these days are just as large in allot of cases and even larger in order to distribute the weight of the gun. I guess though modern double stack guns have come to play a role in that to a certain degree along with clothing style etc(granted older steel revolvers weren't light weight).
Overall though it's a good read, and for those of us too young to have lived and carried with some of those designs it's an interesting look into where this whole thing has come from. I also don't disagree with your assessment of open trigger guard being technically more safe on a 1911, I will say though on some of the older double action revolvers I think it was rather dumb:) Single action to a degree made sense as you still had to manipulate another bit of the action to fire, but once double action revolvers came into play I feel the trigger guard should be covered;)