The consensus is that "yes" you can use the SRAM powerlink with other chains (most reports refer to Shimano.) This question is asked all the time (hence the response above), so if you search the forum for other responses on this subject you'll find more information on this. A few people have reported problems, but the vast majority do not. I personally started using a powerlink with a Shimano chain recently and have not had any issues to date.
Larry