Key legal question
Whether the federal reform appeal was admissible despite attacking only the subsidiary reasoning of the cantonal judgment.
Extracted holding
No. The appeal did not address the cantonal court's independent main ground, so the challenged judgment remained unassailed in a way required for admissibility.
Extracted reasoning
When a cantonal decision rests on several independent grounds, the appellant must show federal-law error in each ground. Here, the appellants criticized only the subsidiary forum-analysis and left intact the main holding that the arbitration clause was valid notwithstanding mandatory local fora under the LFors.