In Zelazny canon, the Pattern reflects out in Shadow, just like most everything else. The nearest reflections are most complete, and thus the safest. The next 3 are usable, but quite flawed. The next 3 are usable but very dangerous. Beyond that, they're more or less unusable.
Walking a Broken Pattern gives you some GreatCosmicPowers, but nearly so much as walking the real thing.