I have the IDI suit. I have used it for the last two seasons. I didn't have to use the floating aspect of the suit(yet) but, it was comforting to know it was available if needed. The suit did keep me warm most of the time, on super cold days I would need to add another layer under the jacket but, typically I would only wear a Tshirt and sweatshirt under the jacket. another aspect of the suit is it is very light I believe it only weighs 6lbs.
I also have the Ice Armor suits both the blue and grey. All 3 suits have there place so it boils down to what you want but, hopefully I was able to answer any questions you may have had about the IDI suit.
Bob Griffith
Ice Team Power Stick
Clam Corp. Pro Staff
Keystone Crappie Association member