Maintenance for the week of October 5:
• [COMPLETE] ESO Store and Account System for maintenance – October 8, 8:00AM EDT (12:00 UTC) – 12:00PM EDT (16:00 UTC)
My opinion... In PVE, let us just turn the dang thing off... In pvp however it should not only always be visible, but also prevent you from sneaking. Unless, you remove its detection buff, then I say sure, no ball ever for inner light.