I've always turned my bags inside out. On occasion I've had three to four foot coastals and diamonds get caught in loops of cotton that appear on the inside, and if they don't want to come out of the bag then it's a fun time extricating them. I don't keep elapids but I certainly wouldn't want to try and remove something venomous that was determined to stay where it was.
About 15 years ago I got someone to make me a snake bag, and I got them to put the stitching on the outside so there'd be no problems.
Hix