5000 pilots making about 100k average each = about 10,000,000 dues income to ALPA. That's gonna hurt.

USAir is a close shop, (I'm told) so the West guys will pay a fee equal or nearly equal to the dues or could be subject to termination. (that should be interesting)

All pilots regardless of union affiliation should be subject to all parts of the contract and support from the bargaining representative if needed. The only exception is new hires on probation. They benefit from all parts of the contract except the termination part of the grievance process. (At Alaska anyway)