Howdy MG,
Yeah, I don't typically care for accidentals either, but I sort of treat those notes as "slides", so that the piece actually ended up coming out as sort of a "Bach as an Irish air". And the half-holing is definitely easier on the big low whistle than on the standard high whistle - more latitude for finger movement - I mean, er, ah, interpretation, and all that
ttfn,
Sherry