> ["Betatester"] referred to combinations of pre-release versions of the Pegasos as well as
> pre-release versions of MorphOS.

Thanks for clarification.

>> "Betatestee" would have made way more sense as byname of the board ;-)

> Initially, it was not used as a byname.

Yes, but byname or not, something that is to be tested is usually referred to as "testee", not "tester" :-)