After this change, I noticed my battery was going down much faster: at the end of the day 30 to 40% of the total consumption was due to "SAproviders" service...
After having a look with Better Battery Stats, I saw that this was essentially due to a partial wakelock from "SASVoiceProvider". Not good.
I don't know much but I know this was not happening with v1.6.132701, so I tried to reinstall v1.6.132701 SASVoiceProvider.apk on the phone (and not the full Gear Manager).
I got it from this link :
(-->go into "1.6.132701/Extracted" directory)
from the xda thread :
(thanks by the way )
The result: no more wakelock, no more battery drain... and normal behavior for the rest.
Have you guys seen this new Gear Manager causing heavy battery drain, or not ?