I like CB actually... yes and no. You do show your audience that every card is blank however if they want to actually take a look at the deck then no. You will need to purchase a blank deck with this one as it does not come included
I guess it all comes down to personal choice. It is likely no secret that CB is a pre-set deck, meaning you need to carry around at least 2 decks(regular deck and Colossal Blizzard deck). Pocket space always being an issue I am pretty picky about what decks I am willing to dedicate to a single effect. For strolling I'm willing to carry Josh Jay's "Waltzing Cheek to Cheek" deck and for a mentalism demo I would be willing to carry a cheek-to-cheek deck for "Cheek to Cheek Asher Style."