to illustrate that their are several ways to acheive emphasis.if one takes the first two bars of Garret Barrys jig d e f#. g dotted crotchet,a g a. c nat dotted crotchet,now if the player reverses bellowson the two dooted crotchets emphasis will be acheived,if the player doesnt reverse bellows but uses an octave,on the g and the c,emphasis will still be acheived.
an anglo player would have to reverse on the g and c,but would also have to reverse between the g a g the latter is unmusical[imo],
so to conclude Robert Harbron is quite right,in that the English allows you to reverses where you wish.
but much can be learned from studying the Anglo,and copying some of the reversing,but reversing isnt the be all and end all,emphasis can be acxheived in other ways[use of octaves or chords ,for example.