order is immediately appealable if, inter alia, the order would "be effectively unreviewable on appeal from a final judgment." Coopers & Lybrand v. Livesay, 437 U.S. 463, 468, 57 L. Ed. 2d 351, 98 S. Ct. 2454 (1978). In the present case, we would not be foreclosed from reviewing the district court's de

order is immediately appealable if, inter alia, the order would "be effectively unreviewable on appeal from a final judgment." Coopers & Lybrand v. Livesay, 437 U.S. 463, 468, 57 L. Ed. 2d 351, 98 S. Ct. 2454 (1978). In the present case, we would not be foreclosed from reviewing the district court's de