This is really cool. First time I have ever see something like this. Looks like if you remove a front shifter, (most weigh about 120 to 140 grams), plus a portion of housing and cable, and then if this unit weighs 155 grams / 5.5 oz mechanism and battery, then it is probably a wash weight wise.
OTOH, the EDS electric shifter has a battery life of around 10,000 shifts, but the battery for this says it only lasts 4500 shifts. Says to me, you might have to carry the second battery, 45 grams, with you in case it runs out of juice.
Overall, I like it, because I have been getting index finger, thumb and wrist pain due to repetitive shifting of my mtn. bike shifter in my old age.
(I went with a Wheeltop EDS recently and it really help only having to push a button rather than push/leverage a lever on a shift pod.)