I'm still waiting for mine to be delivered.
I'd be interested to hear more about cleaning up Whatsapp notifications with Tasker if you have a spare few minutes to reply?
Also hoping to pair the watch with a OnePlus rather than my current Nexus 4. But i'm still trying to hunt down an invite for one (so if anyone has an invite spare and wants to help me out, that would be amazing!)
Get tasker and whatstask plugin.
Profile in tasker; State - plugin - whatstask
Task in tasker;
if %whatstaskgroupname is set
notify %wgroupname - %wname - %wtext
notify %wname - %wtext
wait 1 second
Set weloop to not catch whatsapp, and catch tasker.