Thanks for that link, Cookie. You can buy ready milled lupin flour so I might see if I can track some down. It looks pretty expensive, though, however, if it really comes through on all of the hype I have read on the above web site link (without having to use huge quantities, which is often the case with so called 'wonder' products), then I am sure it will be worth the expense. They do quote their references on their site, though, and I think that is very encouraging.
I would be interested to get feed back from anyone else who has had experience with the "sweet" lupins.