they have told me that if the IPA/IPF had recognition in their particular airline they would rather be members of the IPA/IPF.
problem is it ain't ever going to happen for the reasons I described. You will indeed be doing your colleagues a disservice if you are not a member of BALPA when you join an airline of any significance, (with the exception of Astraeus). Seeing as BALPA is free while you train, why not join both? Otherwise, it just unnecessarily splits the collective efforts of the pilot force.
I really wish BALPA would learn from IPAs customer service though. I too have found them dreadful at replying to correspondance or messages.