I tried this model on before the holidays, love it! It definitely took me a while to come around to the DB28 design with the star trek center bridge but I'm starting to see the design of the watch itself and the trekkie logo less. Currently saving my pennies for the a Grand Blue if I can see one in person...
I think you don't see many DB28s primarily because of the design and the price. The design is super modern so I don't know how many buyers there are that are bought into the design enough to drop $90k on one. Additionally, I think the brand value message is a little muddy: not precious metal, not a lot of obvious complications in the DB28 (2 hand moon), mechanical innovations that haven't been connected to value (e.g. Do the patented balance designs meaningfully improve time keeping? Does the shock protection design mean I can play golf with the DB28?). I still want one so not bashing DB, just my impression as an interested customer who has limited knowledge of the brand.