My thoughts are this: In order to properly carbo load (1) you have to carbo deplete first a few days before carbo loading, and (2) while you are carbo depleting, the diet needs to change to mostly protein and fats. This will allow an excess of carbs to be available on race day.
As for stressing the body, it sounds good but when you run, even LSD you still burn carbs even though the primary source is fat. Failure to have adequate carbs available results in the dreaded wall. Now, if you continually train this way, I would think that the recovery period would be longer and as a result, you wouldn't be able to complete your training goals. I remember the last time I bonked, it took a couple of extra days for me to completly recover.
The long and short of it, I don't see how depriving your body of fuel during training is going to make you better on race day. Especially since it is easy to fuel on the run.
My 2 cents.
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