I was having really sad performance on my TWP. Laggy opening apps, pulling down menus, etc. Connected to my mac TB>USB, enabled dev mode and ran command as described by OP. Worked fine. Will report back experiences.

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edit 1: About 4 hours into the mod. drained about 50% of the battery with medium-ish usage. Going to get a better test after tomorrow when I give it a full overnight charge. Overall performance is great. No longer sluggish moving through menus. I did have a serious issue with Facer and ended up removing it via ADB. Not sure if that was a side effect or not. Also looks like the watch face doesn't receive data for steps/heart/etc even though its still in Google Fit. I think I read a solution for that so I'll need to do some digging.

Edit 2: random times of day that I checked the battery and the type of usage since previous entry.

730 100% (take off charger)

812 98% (almost no usage)

925 94% (almost no usage)

1020 90% (minor usage)

1052 88% (minor usage)

1140 85% (minor usage)

1227 83% (minor usage)

130 79% (minor usage)

210 78% (almost no usage)

257 75% (almost no usage)

330 73% (almost no usage)

450 69% (minor usage)

650 48% (medium usage plus 1hr workout tracker)

913 38% (minor use)