IMO,
pdlamb has the right idea with riding just the Diverge, or at least mostly. Your brain/muscle memory will sort of lock into the handling of it. I have 4 bikes that get ridden frequently. If I go from my very stable, wider tire Lemond Poprad and then to my very quick handling, thinner tire Airborne Zeppelin, I can definitely feel the difference and it takes a short distance to get into that mode. Going from the Zep to the Pop, though still the same bikes, I do not sense the difference as much. It just seems more natural. All four bikes, though different geometry, the saddle.handlebar set up is pretty close