I dont think it would work as a long term thing no but i understand where you're coming from and i believe thats why i had such a good loss this week. Yes i lost 11lbs but i put on 3lbs the week before because of a weekend blowout so i really only lost 8lbs from my total iykwim? Plus then if you average it out over the two weeks, in reality i only lost an average of 4lbs over the two week period.
So while it seems pretty wow it really is a false economy and in all honesty i probably could & would have lost more in those two weeks (going by my previous losses) if i hadnt fallen of the wagon. And i wouldnt have had to fight the food demons - getting back into Ketosis isnt a problem for me, getting my head back in gear is another story.
So all in all i'd say not worth it, not worth confusing your body and def not worth confusing your mind - trust me its pretty demoralising to see the scales go up x