sailing320 - I really like the IP's - our neighbor has owned one since like the 70's. It is very stiff, not as "tender" as most sailing boats I've been on with the same 11' (ish) beam. I guess if you're heeling 25 degrees, you're almost in a knockdown condition for other boats.
The woodwork inside was beautiful - I think it was all solid hardwoods. The upper deck and cockpit is laid out exactly like I would want a sailboat to be, I feel very comfortable with her boat, and have made several changes to my own to match it.