Quote: "the uv tools are there to help speed up the process of mapping a high poly mesh ready for painting & are not really that good for low poly game models"
I am a little lost....because when you work from clone it actually clones only the absolute needed polygons so the mesh its actually uving is super low poly count. That is why you must copy the uv and paste on to your original mesh (which it does not know what it looks like since it only knows the low poly clone) so wouldn't that apply to either scenario?
as far as manual uv mapping, I hate it...I can do it, I just hate cutting, moving, and stitching and tools like this do this automatically.
also as you can see there really is no distortion to the uv map it created, and again could have been super cleaned up by simply poly grouping the objects ahead of time.
Also refer to this video to better understand what I am talking about if you are not familiar with poly grouping and poly islands.
https://www.youtube.com/watch?v=bpiDHCnzdes
In the end my personal experience (so far that is) is if mapped properly with poly groups and I do control paints then this tool should be able to uv map better than me and only takes 5 seconds to auto map. Today or tomorrow I will put together a harder object to uv map and see how well it can manipulate the uv's so we can see further how powerful this tool truly is.