I use a centerlock mag hub on front of my touring bike with a 6 bolt rotor.Uses the simple adapter with 6 pins.No problems at all with it.Been in use for 40,000 miles,up and down mountains all over the western US for the last 5 years.

Installed adapter first with pins sticking out,rotor,then threaded center mount holding the whole mess together.Works fine,no issues at all.