Why would bankera want to open trading on hitBTC as first exchange for BNK? It has historical issues and is a graveyard of many ICOs that opened there. Given how much money bankera raised, exchanges of higher standard would be expected. I am not saying binance is a must, just the exchanges like kucoin or huobi would be a very nice start imo.
I think they had already made partnership with gitbtc or something, but you don't need to trade their, just wait for the bankera exchange launch scheduled for June,