I don't think it's reasonable to expect the industry to stay away from round speakers for fear of looking like B&O.

The first speaker kit I made (only of 2 admittedly) was a 1/4 wavelength pipe design, I think it used a boiler flue, probably 1980.

I'm interested to know what the shape will do to the sound/dispersion/imaging.

Go for it M!

Tintin