Also anecdotal, but this is also what we're doing at our company too. Most of us have the 2015 era Macbook pros, and run a split between 10.9 and 10.10. Others

Also anecdotal, but this is also what we're doing at our company too. Most of us have the 2015 era Macbook pros, and run a split between 10.9 and 10.10. Others that aren't using that gen are using Thinkpads with full keyboards on them with Ubuntu. It's not ideal, but our environment is rock solid for what we need, and newer software that we need still supports us just fine.