4 and 5 on top of press

Has anyone used Haske's system with the 4 getting back instead of staying up? I have my 5 stay on top and pressure (make or miss) and the 4 sprints back, takes a while to practice but much more effective for us because if we keep our 1 back as safety, teams are just throwing it over him to their 5....looking for some input on how others feel about this.