Is there a reason why you'd want to get a threaded headset with the exact stack height for your frame/forks. I can imagine the main reason would be aesthetics, though is the headset more likely to come loose if you have spacers fitted?
Let's say that you're getting a custom frame built (this isn't a "my friend" story, I'm not getting a custom frame), wouldn't it make more sense to have the threaded fork steerer cut slightly longer than necessary for a particular headset's stack height. That way you could fit a multitude of different headsets as required rather than being limited to particulars...
Is there a reason why you'd want to get a threaded headset with the exact stack height for your frame/forks. I can imagine the main reason would be aesthetics, though is the headset more likely to come loose if you have spacers fitted?
Let's say that you're getting a custom frame built (this isn't a "my friend" story, I'm not getting a custom frame), wouldn't it make more sense to have the threaded fork steerer cut slightly longer than necessary for a particular headset's stack height. That way you could fit a multitude of different headsets as required rather than being limited to particulars...