I do indeed. I think as long as it's clearly indicated that it is a sport, it should be fine. But if it sports to or reverts to a recognized variety, maybe the picture should be elsewhere.
Unfortunately, the area for a caption when we post a picture doesn't seem to show clearly when we view the pictures (or am I missing something)? That's why I just added a comment to that streaked sport of 'Pewterware' though I'm sure I indicated it when I originally posted the picture last year. Is that something which might be improved - the visibility of our captions? We can explain a lot about the picture in those captions.