The original recipe suggests that you should mix the psylium with water first and let it swell up before mixing with the other ingredients. I've tried this way, and using a typical 'all in one' method, and found little difference in the results.
The end result is more like cake than bread, at least in texture. It has a slight coconut flavour (although not in a bad way) but it does mean that it's better either just with butter, or with butter and something sweet rather than savoury. I've tried with cheese (not great), with jam/marmalade (very nice) and with a sweetish soup, which was also OK.
I'd recommend making half the amount (unless there's a few people around to eat it) as you really shouldn't eat too much. The psylium is so high in fibre you end up visiting the toilet quite a lot unless you eat very small amounts!