The trouble with these Operations Management initiatives (Just-In-Time, Six Sigma etc) is that they are heavily oriented towards a manufacturing environment, and it is difficult to translate the principles into a service (small 's') environment.
I mean that production processes (second line or bay work) can be observed, problems Defined, Measured, Analysed, solutions proposed and tested to Improve the process, and new processes Controlled (the DMAIC process). Transactional processes (first line or project management) are far more difficult to predict, hence the whole DMAIC (or LEAN) argument begins to look a bit weak.
As in industry, this sort of process improvement does have its place, and rightly so as the savings from 'taking cost out of the product' can be significant. Again, as in industry, those of us in a service (as opposed to a production) environment should be given a set of 'whats' or principles, for what must be achieved. How it is done can vary from one job, or day, to the next, depending on the circumstances at the time. 'Best Practice' should be well understood and widely available for reference, however a one-size-fits-all approach just doesn't work here.
In summary, I suggest LEAN does have its place in the modern RAF, and there are places where it is not appropriate to apply the principles. For it to be universally applied as a panacea would be a mistake.
PS - I think I've just won on Bullsh!t Bingo with all the words in here...!