Gimme feedback

Some companies just seem to get everything right, don’t they? Boden is one of them. Even the copy it uses for its customer survey pop-ups is written in Johnnie’s chatty and personable style, setting it apart from the nondescript copy these forms usually employ:
“Do we give you satisfaction?” asks Johnnie. “The Rolling Stones couldn’t get any—but that’s probably because they weren’t shopping at Boden.” Quite!

I’d be interested to know whether Boden tested this approach against a more standard form. Did it have higher response rate?—MT