Lumping BU and segwit together in that same sentence is a terrible mistake. Segwit has 100x more coders that worked and tested it, and it has been LIVE on testnet for a very long time now, having received 1000s of times more testing than BU has. There is no "rush" with segwit. It was developed slowly and meticulously, and has been audited and tested by many very capable coders. The same can NOT be said about BU.