in the first few weeks of induction, yes it is, I lost a stone and half in 14 days. But be prepared for PISS, Post Induction Stall Syndrome. Basically what happens is that your body panics because it has lost so much weight and then for a couple of weeks generally stubbornly refuses to give up any more. This is the point where many people fail, because they give up then.
Yes it is right but the first couple of lb will be your glycogen stores depleting.. this is why if you even have one meal of anything naughty you will pretty much instantly put those back on.. because they are not a fat loss. The good news is once you get back on the wagon they will go again as quickly as they have now.
I have scales that show me my weight, and also the weight of my body fat. My first week I had lost 2 and a bit lb more weight than I had fat.