i’m 5ft6in too, and was also worried about the height. my previous bike had a seat height of 795mm. i almost included the lowering kit when ordering the Svart, but was advised to give it a try before deciding at the first servicing. it took some adjustments, but i can handle the bike pretty comfortably within the first week. i was taught to have “only left foot down, right foot on brake” when stopping, so no issues there.
as kungfupoulet said, the only issue is manoeuvring at low speed and reversing. so i simply dismount and reverse by push it.