A progressive over-riding thumb throttle is a valuable riding tool with MANY uses beyond the ones you mentioned. Combining one with torque-sensing assist makes for a very versatile power delivery system.
The throttle in no way defeats the purpose of torque-sensing assist, regardless of motor location. The 2 motor control methods only complement each other.
Having a throttle on my torque-sensing hub-drive doesn't force me to use it. Mine is on far less than 1% of the time and never in lieu of pedaling — only as a brief boost to the assist. A second or so of throttle is usually all it takes. Wouldn't part with mine nonetheless.
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