We had a thread on this a few months back, and the Norwegian contingent were horrified at the idea because of the possibility of dead grass from ice damage. I mentioned that the 7th at Crystal Downs and the 10th at High Pointe had survived for a long time even though they are true punchbowls ... but sure enough, the 7th at Crystal Downs had two large dead spots in the bowls this spring!
I think the potential for damage is more severe nowadays because the grass is stressed out more all through its growing season, and isn't as likely to survive winter stresses.
Nevertheless, I do love the occasional punchbowl for the sake of variety ... and the fact that they give the average player a much-needed good bounce against a superior opponent.
One of my favorites is the 18th green at Cape Kidnappers, which you can approach straight-on, or try to play a bounce-in from the left side. Julian Robertson didn't like it; he was aghast at the thought that in some future New Zealand the winner would hit a bad shot to the last green and get a good bounce and make a birdie to win. However, the bank on the left is quite severe, so if you tuck the hole location up against that side, no one is ever going to get close by aiming left. Michael Campbell backed me up on that to Julian when he visited the site during construction ... which is one of the reasons I was happy to see Michael win last week.