Garland, I am glad you posted that quote. Macan was way ahead of his time (actually that time may have never come!) in his writing and designs.
A trip around Shaughnessy will show (I think) 5 greens that slope front to back. I suspect in the recent Canadian Open they would be among those with the highest scoring average on the course, especially 3 and 18.
At Royal Colwood, 8 of the greens move left to right, right to left, or front to back. They are the best holes on the course, offering a day after day challenge to the membership and a strong test to the highest level of amateur tournament play.
And the challenge these type of greens offer is not the tricked up, long rough, narrow fairways challenge many courses need to use to test the best players, it is a challenge of real shot making and careful thought. It is what so many of us on this DG admire.
One caveat, this type of green construction works best when conditions are F&F, soft conditions negate the challenge, and - too often seen - soft approaches and firm greens are silly.