For _tactical_ use, I rely on my trusty model M, with metal base plate. For home defense, it is without equal. ¯\_(ツ)_/¯
The rest of time I greatly prefer the ergonomics of the old thinkpad keyboards w/ track-point, but the external ones are expensive and sucky, imo.
I also sometimes move my mouse to the left side of the keyboard so that I can have better, more symmetrical posture. I would really prefer to have a small external USB trackpoint that I could simply place beneath my spacebar, but sadly no one seems to sell this.
This person even hacked their own (https://github.com/feklee/usb-trackpoint), but I haven't found the time or motivation. I bet I'm not the only one who would pay a handsome margin -- business opportunity?
That UHK pointer module would solve my ergonomic problems better than mousing backwards, and might be worth the price by itself.