Eleri had her 13' 30" of fame or however long she was in shot in the Welsh version of Question time last night. She was careful not to say anything. They discussed Egypt, bankers and keeping the London Welsh Centre open.
Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.