Additionally, I personally felt a slight urgency to learn and conduct my
checks accurately with the mixture cut as opposed to being able to immediately apply climb power if I stuffed anything up.
In your typical light twin i.e. PN68, Duchess, Seneca etc., by increasing the mixture back to rich you will have full power available again within about 1 second. Never had any hiccups using this technique in over 1000 hours of piston multi-engine training.