I have a traverse. Use it for running, MTB and occasionally walking (the hills down here don’t feel big enough to call it hiking)- mostly just recording but occasionally for navigation as well. I have a garmin edge 510 for comparison if that helps but never used one of their watches.
Largely it just works to be honest. A lot of things just feel that bit more finished than the garmin. Menus and things seem ‘cleaner’ somehow.
App syncing seems comparable to my Garmin and that app, seems to vary depending on the app version, firmware version, android version, if I have a new phone, phase of the moon, how the local football team did on saturday, your guess is as good as mine! On both devices sometimes it takes them a while in the same room to sync, others it’s near instantaneous.
Navigation is about what you’d expect from a small screen and a breadcrumb trail- perfectly useable but no OS map! No different to my garmin 510 really. I believe it can do lat long but never tried OS grid ref, can have a look if you want?