The other Radliffe title which I actually own is "Upon Dark Waters" and I think that the style is very similar, except that writing it largely in the first person rather than as sweeping prose is peculiarly relevant to the life of a Great War fighter pilot, so rather clever.
The story has all Radcliffe's strengths - vivid characterisation, panoramic scene setting, elegant plot,meticulous grasp of the subject matter. Maybe in places, so much so that it could be educational as well as entertaining.
It does have weaknesses - an occasional lapse into mini-series drama, what some people might see as trite resolutions and the odd glaringly careless detail.
For all that, though, I loved it, couldn't put it down and have to say - get it and enjoy!