The phrase "as in the pocket of" is correct and usable in written English.
It can be used to indicate a specific location or context, often implying something is contained or held within something else.
Example: "He always keeps his keys safe, as in the pocket of his jacket."
Alternatives: "like in the pocket of" or "similar to the pocket of".
Labour has seized on Mr Crosby's background as a lobbyist for tobacco companies to portray the prime minister as being in the pocket of big business, with Mr Miliband saying Mr Cameron was the prime minister for "Benson and Hedge funds".
Mr Blair is seen as being in the pocket of his influential press secretary, Alastair Campbell.
You characterize Hispanic lawmakers and advocacy groups as being in the pocket of the drug industry in its attempt to stop a Medicaid preferred-drug program in New York.
Greenpeace's chief scientist, Doug Parr, said: "By not supporting the ban, environment secretary, Owen Paterson, has exposed the UK government as being in the pocket of big chemical companies and the industrial farming lobby".
At his rally in Spotsylvania Courthouse, Mr. Cuccinelli attacked Mr. McAuliffe as being in the pocket of labor bosses, criticized gun control ads paid for by Mayor Michael R. Bloomberg of New York and boasted of suing the federal government three times.
And she went after her rival aggressively over his attempts to portray her as being in the pocket of Wall Street because of the campaign donations and the fees she had received for after-dinner speeches.
Perhaps I'm annoyed that my 4-inch iPhone 5 doesn't fit as snuggly in the pocket of my jeans, whereas a friend of mine could be downright obsessed with the video viewing and gaming experience on his giant Galaxy Note 2. People are different, and so must their phones be.
For several decades gay Republicans have decried LGBT people who support Democrats as being in the pocket of the Democratic Party and voting only on a single issue -- support for LGBT rights -- while gay Republicans are looking at a broader spectrum of issues (and, in their case in particular, at conservative fiscal issues with regard to taxation and government spending).
