I tried this group two nights ago at Okie-Tex star party. I completely missed NGC 6927 because I wasn't looking for it. But as for the companion of NGC 6930, here's what I have:

"Far averted vision revealed the length of the edge-on, but obscured the 'binucleate' character. Nearly-direct vision revealed the 'binucleate' character on occasion and even showed the elongation of the high surface brightness companion at a few instants, but made the edge-on look shorter"

And as for NGC 6928, I noticed that it gets thicker in the region south of the star that flanks it.

This is with an 18" Obsession and a 10mm Delos EP.

Clear Skies!
Akarsh