I don’t have experience of any loose leaf Lapsang Souchong to compare against unfortunately, but I did enjoy it in a bag. I can see the loose leaf have a fresher underlying tea flavour, but I thought this was great as a quick brew solution.
It has that wonderful camp fire smell, much stronger than I expected. The taste was very pleasant too, just enough wood and smokiness in it. It wasn’t overpowering and steeped very well.