I really like Klipsch speakers but I do not see how using this type of configuration is a good viable solution for Atmos. First off I do not see how you wouldn't notice the sound coming out of the top of the cabinet? Second bouncing sound of hard surfaces introduces distortion and can not be the most accurate way to get sound to the listening position and make people think it is coming from above them. Besides in my room it would be right behind the two recliners and I am sure I would hear the sound coming from the top of the cabinet and it would sound like it was coming from behind me. Even with a bookshelf sized speaker mounted to the wall I do not see how it would work.
HT System: Marantz SR-8012 11.2 (7.2.4) Receiver, Sony XBR55A9F 55"OLED 4K HDR/Dolby Vision/IMAX Enhanced TV, Panasonic DP-UB9000 4K UHD Blu-ray Player, Toshiba HD-XA2 HD-DVD player,4K Apple TV 64GB, Speakers: Altec Lancing A-7's (L&R), Bowers & Wilkins HTM61 S2 center channel, Klipsch RP-600M Surround Speakers, Advent Marbles (Height Speakers), HSU VTF-3 MK5HP Subwoofer. AudioQuest Cables, Pangea Audio speaker stands.