My Desilu had cherry eye surgery, and I had it cut out. It was a huge debate between different vets and my breeder. One vet recommended it to be tucked, the other recommended removal. My breeder also suggested removal. In the end, I chose to remove it because I didn't want to risk it popping back out, and having Desilu go through it all over again. Since the vet who recommended tuck said he couldn't guarantee it wouldn't pop out, I chose to have it cut out.
Its been almost a year since the surgery, and no evidence of dry eye (Dr said only 30% of tears come from that duct). I'm lucky though, I do live in a very humid environment, so I don't think I would have made the same decision for removal if I lived in say, Arizona. It was also about $700 cheaper, which...of course doesn't really matter if its for the health of my Desilu.