I have added the 220mm Hope to the front but have not changed the caliper yet. Even so, I can feel the difference. it may be that 220 on the rear is overkill - the way i ride is a bit more binary with the rear. Once it gets steep i tend to just drag the back end....Just to confuse you more, I’m running the Hope v4s with 225 front and 200mm vented/floating rears. Works extremely well pulling up 27kg + me @85kg kitted up.
No brake fade ever and great consistent lever feel at all times.