It takes less condition for what? For training bonuses?
No, it doesn't. For normal training? How can you spend less condition, if you need to spend, let's say, 20% of it? This doesn't make any sense.
I'm sorry, but this is not a technique, rather two sets of mindlessly picked drills. They save you some time and effort to plan training sessions carefully, sure, but they can't be effective if you train all your attackers and defenders in two groups. You are wasting condition on training grey skills. Every position has it's own
unique set of optimal drills, but you use the same sets for two big groups of very different players.
No offence, but I think you need to dig in the training system a little bit deeper before giving advises.