The other ADVANTAGE of a beveled edge, is the expansion and contraction of a wood floor with changes in temperature and humidity. On a "traditional" wood floor, the finish is applied after installation, and the expansion and contraction results in "cracks" between many of the boards. There is very little that can be done about this, and the cracks cannot be filled because the filler gets pushed out when the boards swell again. With a bevelled edge floor, these cracks still occur, but you don't see them because the bevelled edges hide them.
If you want to keep the floor clean, don't wear your shoes in the house, and buy a good floor vacuum.