Thanks, OwenM. Really appreciate the quick response.
I think I've got it, from your description.
WAIT! Just remembered that I got a POS Endura/Delica knockoff when I placed an order with an on-line seller. It has tip-up format.
As I mentioned in my earlier post, it seems to me that the hand has to go awfully deep into the pocket in order to grasp the knife, as opposed to just going in an inch or so on the tip down carry. A medication I've been taking for the last 18 mos has turned me from a lifetime of relative skinniness to a "moderately obese" person. My pockets are tight! I'll have to practice with my M16 and the POS tomorrow, and see which I can clear out of my pocket quickest.
In my practice with the M16, have developed a pretty high elbow approach. This allows me to remove knife in inclined upward curve towards straight arm position. I'm hitting the flipper as I clear the target, and when I hear the click, am doing the slight shift necessary for the upside down hammer grip.
I think Jim March had a good point when he suggested that the ability to make either a slash -- or stab, IMO -- with the knife is a more realistic viewpoint of significant speed, than simply getting the blade out of the handle.
One of the funny things about this subject, and of course it could have exactly the opposite of the desired effect, is that I think it owuld be hilarious for knifeknuts to demonstrate to our elected representatives that the speed of opening autos isn't up there with several standard folders. Might get the law against the autos eliminated -- or all folders except slip joints.
Personally, I don't believe that the millisecond differences we're discussing here are likely to make much difference in reality. If one is keeping others at a realistic distance, then there should be time to get a blade into readiness for action. We also have to face the fact that some folks are just an awful lot quicker than others. I remember reading that once Doc Holliday got into a scrape at a card table. Another guy moved towards his inside the vest handgun. Holliday reached into a coat pocket, pulled out a folder, opened it, stood up, leaned over the table and slit the other guy's throat before he could ever clear leather! (Sorry, but many years since reading that, haven't the foggiest notion when/where.)
Bugs