Ah my friend, your assertations are based on the common misconception all endurance athletes looks like Mo Farrah - and it's a fair misconception cause the elite ones tend to (they are genetically fat adapted).
Alas attend any marathon, Tri or century ride and you will see a wide range of body types - you're unlikely to find any morbidly obese but they not all gonna be "pealed". There's a number of reasons for this - but I'm not smart enough to explain them all.
But please don't get it twisted; my primary reason for using GH is for the recovery benifits - particularly of joints & connective tissue, it's just if I can get secondary benifits of fat loss from a well designed protocol then why the hell not? More bang for my buck etc.
And whilst I'd normally be pretty happy at 12%bf (I feel it's a fairly decent condition to be in- I have abs etc) my dalliance with power lifting this off season saw me accrue a significant amount of muscle - which is awesome BUT it's still weight on my joints and therefore I'd like to bring my total weight down and if I can do that from fat rather than muscle, well that's preferable, is it not?