On the other hand:
B. If you realize that your 25 minute commute is going to be 25 minutes +/- 10% REGARDLESS of how fast you accelerate or how aggressively you drive (because of traffic lights etc), and you do not have money to waste on wasted fuel and increased wear & tear on your vehicle due to aggressive driving, then you probably don't care if you can accelerate 1 or 2% faster between the red lights. In fact, you probably are driving strategically (as opposed to blindly & aggressively) to minimize fuel use and wear on the vehicle, which means you are never using more than about 50HP max in any case (aside from towing or emergency maneuvers).
If Case B applies to you, then there is no purpose whatsoever to the PWR Switch, unless you are towing a vehicle up a long & steep mountain. In that case, there is a valid technical justification to higher shift points, related to cooling system performance (which does affect wear & tear on the vehicle).
By the way: As far as I know, there are no ironclad laws that mandate that slower-moving traffic ALWAYS remain in the right lane, in the USA. There are "rules of the road" that suggest that slower-moving traffic should keep right WHERE PRACTICABLE, but there are numerous conditions where one should keep left regardless of speed - when preparing to exit to the left, looking for something on the left, to avoid traffic merging on the right, to avoid poor road conditions on the right, etc etc.
This has been a fun thread up till now, but I think you need to place context in your assertion that the commute will range by only 10%. That is highly dependent on the number and type of intersections you travel through, as well as the posted speed limits and types of vehicles on the road. I live in the Washington/Baltimore area where congestion is very real and driving with purpose can shave far more than 2-3 minutes off a trip.
On the other point: In Maryland for sure, and many other states I believe, it is against the law to drive below the posted speed limit in the left lane (weather permitting). In VA and PA all traffic is required to stay in the right lane unless passing on most four lane highways. It is actually posted. The problem is that we have highways with many more lanes now and some folks think it is their "right" or "duty" to drive the speed limit or less in passing lanes. These are also often the folks who stop at yield signs and don't merge into traffic at speed, or move out of the way for merging traffic. Those are dangerous situations where the passive driver is actually at fault and the police have the right to cite them for it.
I see no glory in being altruistic behind the wheel of a beast that can so quickly change the lives of so many strangers.
But I would like to try that NOS system!