Non-meat protein while training

I put up a question on my favourite Google+ Community, and got some great answers.
The thread is here:
https://plus.google.com/111980710253193266374/posts/a1wuD9rJrxq

I'll transcribe it when I have the time.
Yet again, the folks on the Bike Commuting community have come up trumps.
A group well worth joining!