It's a good question, but it depends on so many variables that I doubt anyone knows for sure.
We're told that it's the peak levels that cause the damage, rather than the longer term exposure to slightly higher levels (so the amlitude of the curve, rather than the area under it). I guess you might be able to reduce the peak levels, but you'd do it at the expense of being at slightly elevated levels for longer. Personally I'm happier when my BG is down below 6mmol/l than when it's hovering near (or above) 7mmol/l.
The real benefit would probably that you your appetite would be reduced if you tried to eat again after an hour...
But I'd guess that it isn't really worth the effort.