How do you crack a hi gat cymbal in the first place?
It takes a special talent.
But about the matching issue: they were usually matched at the Gretsch warehouse, but this only applying to the U.S. market:
[img]http://photos.imageevent.com/drumaholic/lizziesstuff/websize/PG%20logo.JPG[/img]
For the European market I would surmise that these cymbals may have come directly from the Istanbul foundry and never even saw the Gretsch warehouse. They probably just sent out a pair of cymbals and didn't bother to find the perfect match-up. And I'm also assuming that these cymbals were originally purchased in the U.K. seeing as how you're from Ireland.
In any event, if they sound good together that's all that counts.