21 days of zone-ish, paleo-ish diet, I'm down 2kg, after an initial loss of 3kg after 2 weeks....but, I'm down 3.6% body fat, which is actually a 4kg fat loss (and 2 kg muscle gain).
Last week was tough to keep it up, as work got really busy again and I did not have time to weigh and prep food and had to rely on take-outs, where even the salads are often heavy on feta-cheese and dressings. (And low on protein)