'Works' is correct, 'fine' is perhaps an undeserved exaggeration. It suffers from very limited (if any) user options. For a start, there are no user-selectable compression options available. The image it makes will be near enough the same size as the total used data of the partitions being imaged. Frustratingly, there is a compression algorithm built in, but it is only employed if you choose to store the image on a set of DVDs.
And on completing the image it still only offers to make a recovery CD, there's no option to make a recovery USB or ISO. Who has an optical drive these days?
None of those restrictions apply to any of the popular 3rd-party imaging tools.