Interesting - could you post a pic when you have time?
ive got a set of nitto noodles and running ergos, the grooves arent necessary and the bars dont look wierd shape when taped over the cables. got both cables taped underside front of the bars. great bars and lush looking.
heres a couple of photos, sorry, very poor pics.
these are big old 46cm noodles iirc. I followed the advice of rivendell in terms of sizing and I love them.
im not into racing andwanted to build a fast and comfortable bike for all occaisions - with a retro stylee. Similar to your thoughts on neo classica really.. this is a 531 joe waugh with 9speed chorus mostly.
not sre on nitto web site but i got info from rivendell cycle works, hub jub and velo solo web sites.
hope this helps