Yes, you get 33% less hands per hour with just one other ploppy. For double deck, they cut your penetration in half. You cannot win at a full table for single/double deck. I need to play heads up if possible, and if someone joins me, I will leave for another empty table. Or I will ask if they will leave if I split tens, then I split the next minimum bet twenty and hope they get the hint. It's worth the sacrifice to get hours of heads up play.