After a few days of using the E8, here are some personal feedback.
1) No Idea how to switch off. I assume put into the charging box means off.
2) When running with it, the silicon ear tips aren't suitable. They create a seal in the beginning but during the run, the earbuds become "sealed" then "unsealed" then "seal" then "unsealed", continuously. Very irritating.
3) Have not tried the foam tips during run. But music doesn't sound as nice with it. Additionally bought Comply's TWS foam eartips. Will feedback when comparing the sports foam eartips included vs the TWS eartips.
4) The beoplay app... sibeh jialat. Cannot detect the earbuds most of the time.
For now, bo bian. Got to keep replacing eartips during different usage periods.
Still, a lovely piece. I can live with the small disturbances.