Sorry, but I very much doubt this - potatoes have a very high glycemic index (sometimes higher than that of straight glucose!), so you will have a blood glucose crash shortly after eating them, causing you to feel hungry.
I have reactive hypoglycemia, and potatoes are something I strongly avoid for this reason (they will cause me to hypo as soon as 30 mins after eating them).
I was responding to your post about satiety, not insulin response?
Eating potatoes causes your blood sugar to rise rapidly. When it falls, it invokes a feeling of hunger. Blood glucose can be measured directly in the blood, and isn't a matter of opinion or anecdote :P
I was suspicious of the results, so I just downloaded the paper that your link refers to - low and behold, it has this at the end:
"This study was supported by a competitive investigator-initiated grant from the US Potato Board"