I recently purchased a nice new Cinelli 1A stem and am looking to use Nitto M186 "Neat" bars with it:

I am wondering if anyone knows if that is possible? The flattened top sections are what really worry me (though according to Nitto they measure out at 24.0mm) and I fear I might just have to buy them and test them out.

Both are 26.0 and the bike it is going on uses a quill stem so all of that is correct. I am also not planning on converting the bike to 1" threadless or putting adapters in or any of that jibber-jabber and I really don't want to use round bars (my hands prefer flat tops for comfort)