Thanks for covering this topic, Rob. I have a few things to consider....
1. With either holster, you still effectively have a concealed weapon....your house is concealing it.
2. Referring to some of your prior advice, I would assume that you have hardened your home to prevent/delay such a forced entry. If so, the home invaders are slowed enough for you to draw, retreat to a safe room, etc. That makes the type of carry moot.
3. If the invaders are in your home and are advancing on you, you probably won't have time to draw from either type of holster. This is when your empty-hand techniques come into play. Also, if you can fend them off long enough to draw, that 0.15 seconds may come in handy, esp. from a holster you can blade away from the threat.
4. You did your experiment from a standing position, but you talked about being seated on the couch watching TV. Would you consider repeating the test using the seated position on a couch or recliner?
Thanks for the thought exercise.