I enjoyed Tail End Charlies - aerial combat, and the bomber war in particular, can sometimes seem like an impersonal business; machine against machine (or the faceless 'bomber versus city'), aviators never seeing the whites of the enemies' eyes and so on. I think TECs provides a very useful human perspective, focussing as it does on the experiences of the Allied airmen of both combat and life in wartime Britain. Incidentally, I found the recollections of schoolboy David Hastings fascinating - you may have already read them if you're halfway through, and having been introduced to 'LMF' in Terraine's The Right of the Line, I think TECs does a good job of giving an impression of just how harsh this policy was, and how punishing on BC aircrew.

Like you say, it's not an exhaustive study or particularly ground-breaking, but as a broad illustration of the experience of the latter stages of the bomber war it's a useful book, and compliments work that focuses on more operational or technical aspects like Middlebrook's on Hamburg or Nuremburg.