I have been keeping reptiles for pets for over22yrs.I have several cages with more than one snake in it.There are pairs,trios and quads.They all get alone fine.One pair of dumeril boas didn't stay together.I think one is sexed wrong.I have boas and blood pythons together.They are always curled up together.They share the same hide boxes,there are several in each enclosure.I have always fed outside of where they live. The only down side is the extra cleaning. My argentine boas have lived together for13yrs.now.I have no problems in keeping snakes this way.This might not work for everyone but it works for me.
JOE