My thoughts from my experience housing multiple animals together:

It's less work and less expensive to house them separately when compared to housing them together in a healthy manner.

If you're not spending more money and more time dealing with a multi-snake enclosure than with two separate enclosures, you're not likely giving them optimum care for multi-snake housing.

If your desire to house multiple animals together is driven by something other than conserving money, space, and effort, your motives are misplaced.