And Al Pi Halacha, using secular court is an issur gamur normally. They MUST, al pi halacha, arbitrate their dispute in A B”D, whichever one it is. Secular court is NOT an option for a Jew.
Creedmoor Chassidus and Doswin are strong believers in this, especially claiming Kim Li that Kol D’Alim Gavar. 🙂