SINCERELY hope I'm wrong But looking more and more to me like the split artwork is THE International steelbook and the lovely all blue steelbook is a mirage . . .
Split artwork showing also on The Americas edition which is the same apart from the title on the front as well as on the spine.
Americas
Live pic of the International steelbook (according to Scanavo) with locations listed as Belgium, China, France, Germany, Hong Kong, Hungary, Italy, Japan, Luxembourg, Netherlands, Nordics, Poland, Portugal, Romania, South Korea, Spain, Taiwan, Thailand):-
As can be seen no mention of the U.K. though !!! so I haven't given up hope . . .
(I wonder ?. . . the dark blue single image ? . . . a Zavvi WWE exclusive with a different finish and de-bossing !? . . . I should be so lucky)
Anyway, regarding the steelbook listed at Scanavo as the International steelbook - looks glossy as they come but that front artwork isn't really doing it for me, alas, and the perfect steelbook for me for "Passengers" would be this back and the front image in the OP.