You're not going to get many people to encourage cohabitating a species that is strongly advised to be housed separately. They're advised to be kept separately by experienced, knowledgeable keepers and breeders for many reasons.
But it sounds like your mind is made up.
Just keep in mind, as a pet owner it's your responsibility to help the animals THRIVE not just SURVIVE.
I USED TO use unregulated heat sources and heat rocks. My point being, that was almost 20 years ago. And I never ended up with a burnt snake. I GOT LUCKY. Now that I am better educated, I make smarter decisions, putting the ANIMAL FIRST!!! So just because your friends HAVE done this doesn't mean it's the best way to do things.
You're anthropomorphising. BPs are not social animals. They do not prefer to be housed together. They're not going to be happier together.
Bottom line: as pet keepers it's OUR responsibility to make the right decisions for our animals and put their well-being above our own. The animals don't get a say, so it's up to us to do what's right for them.