I don’t want to rain on the Op’s parade but SKY don’t ride in Rapha gear.
They are constantly tinkering and as far as I’m aware the latest stuff is from a small but specialist material factory in Portugal. Wiggins was also back in his 2012 skinsuit rather than the latest Bioracer(?) skinsuit that Tony Martin etc still use.
On the shoes front, Wiggins experiments (or maybe is paid to ride very short term?) with multiple brands before the main stage race of the season. He has had lots of time with other brands, even unbranded Specialized SWorks, and then has ended up sticking with the Bonts for the main race of the season (eg Le Tour). The laced up Giros are not necessarily better or worse than anything else but they are the latest desirable and marketable thing to make a few pennies from 😉