Loved your illustration. When you order those speakers from Jim Salk, be sure to include it

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He probably has had customers who want the tweeters centered, but I wonder if he's seen your request before. Jim's been to many of the larger audio shows, and he has stories of some truly strange dudes. Like the intensely serious oriental gentleman who went from room to room carrying his precious custom-made silver speaker cables. He refused to listen unless they were used. After a few minutes, he spouted forth with a detailed critique of the speaker's numerous flaws. He very politely refused to buy any speakers that didn't make modifications to meet his requirements. So, in comparison, your request would be no problem

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For what its worth, all Salk speakers do include cloth grills that would cover the drivers. They attach by magnets in the grill frame and buried under the veneer. Jim usually doesn't show photos of speakers with the grill in place.