It's good to hear that it works better that way, but if I'm behind the times, then Bose is too with their current marketing. They modify the earlier advice somewhat on the current web page:
Originally Posted by Tim2723
"Using proprietary Bose technology, L1 systems combine PA and monitors into a single, highly portable unit that can be positioned behind or to the side of individuals onstage."
But the current owner's manual (PDF download on the Bose site) says the following on page 15, under "Placing the product in the right location for your performance":
"Place the product at the rearmost part of the performance area or stage.
If possible, position the product behind the performer"
That's followed by diagrams showing placement behind the musicians.
If the users are discovering better ways to use the system then that's great, but it's not in the official recommendations. And that info isn't filtering down to owners in the field who aren't following forums like this. The other band my guitar partner is playing in, uses the rear tower placement because that Bose owner thinks it should be used that way. For reasons involving band politics and the preservation of personal relationships, I'm not going to suggest they try something different.