We've recently had some problems with flaking of gold plate on keypad fingers on a pcb.  

Consequently, we're considering changing the finish to AlphaLevel, although we've been unable to find any major examples of companies who are using AlphaLevel 'unsoldered' in this type of application.

Does anyone have any experience of the long term problems we might encounter if we make this change, eg degradation of contact causing erratic keypress operation?

Regards

Rob