When I was a lad, the great Athol Jury took me aside and gave me some advice. If I ever wanted to do a CPL(H) then the most cost effective way of getting there was via CPL(A) and do the conversion . Reasons given were much the same as Mr Eacott's advice.
It could very well be lineball re-cost delta PPL(H)training from ab-initio to licence vs PPL(A)+ conversion. Experience and airmanship would haveto be easier learning in fixed then converting to fling.