Joseph Snyder if the TCK test used module instead of comp would that fix it for you?

 toner = (Toner) InitialContext.doLookup("java:module/Toner");

printer = (Printer) InitialContext.doLookup("java:module/Printer");

I see no reason why we couldn't alter the test that way and avoid the cross-spec issue.
The test is focused around transactional observers so it shouldn't change a thing.
Or is there something I am missing?