If you are not noticing any shifting issues, then you can only go with it to to see what happens.
I replaced a DA chain on an otherwise Ultegra system with a high end KMC 10sp chain and had really noisy inconsistent shifting over a new cassette which no amount of adjustment could fix. Eventually took it to LBS who put a DA chain on and volia ... no more problems. LBS said that sticking with Shimano DA chains gives most reliable results.