Steve Gardham:"It should be mechanically possible to attach handstraps to some part of the concertina without necessitating the hand-bar"
RE:The traditional "Anglo/Duet handle concept" comes with a handbar but that might be modified of course also.The traditional handbar is very primitive as a support for the hand itself and the location of the common handstrap is not ideal either, it locks the mid part of the hand too much unless you just have say 2x10 keys at most to finger, so some modification of the 'original' design is desirable anyway

S:" but as someone has already said the extra need to move rapidly from one button to another on the English when playing complex melodies needs the 3 fingers in use to be as balanced and free as possible".
RE:Agree, but I would rather say it needs 4 fingers in use :-) and that argument is also valid for Anglos and Duets is it not? more for Duets usually than for Anglos, but still, so I see no conflict here using the same kind of handle for all systems.

S:"Playing chorded classical pieces and accompanying song on the larger heavier Englishes has benefited from hand straps".
RE: I mean it is important to separate "handstraps" ( as being a part of the Anglo/Duet handle) and "wriststraps" (as traditionally being a complementary part to the English handle)since a "handstrap" or a "wriststrap" respectively function entirely differently, and this discriminates the practical design and use of them.

The classical *wriststraps* for Englishes function very poorly in fact.If set tight they lock the hand in a very dysfunctional position but do work on both push and pull.If set looser the do not work at all on push and un-satisfactory on pull.To compensate for this a support for the wrist(20-40mm high)has to be added so that the wrist can be fixed in a more suitable position.