I've seen interrobangs in the form of "?!" used in a number of published YA books in the last year or two. I'm a fan, but I know others writers weep at the combination. One of my critique partners feels it's lazy writing. She argues it's telling, that one's writing should show the exclamation, and even says it's degrading to formal punctuation.
So Tell Me: How do you feel about "?!" in published books? Love it, hate it? Would you like to see it made into a standard punctuation mark and printed superimposed as invented in the 60s?