I think the point of criticism of using the Givi bags isn't that they are inferior, but they lack the image of being one-of-a-kind. They are a generic element to a bike that will rely largely on image and being a one of a kind bike to sell.
It was a marketing decision on their part, and I doubt they will lose any sales for it. If I were interested in the bike I'd prefer it to have unique luggage, although it would not be a sale stopper.
2011 Sprint GT, 2000 Moto Guzzi Jackal, 1981 Honda CB750F, 1957 BSA Bantam D3 restoration project, Past bikes -2008 Kawasaki KLR650, 1986 Honda Shadow VT1100C, 1998 Honda Shadow Aero VT1100C3, 2006 Yamaha FZ6, 2006 Kawasaki ZX-14,1980 Yamaha XT500