The curves that I have seen on the few ve t25 setups that were actually dyno'd were better with the cams switching. They just need to be switched early, I don't remember exactly where was the best but I would try 3k to start and go from there. Ben I used to think the same thing as you but since I saw i a couple times in person I know it isn't. These people were in the 270+ whp on a dynojet on a t25. Not switching the cams does make a nice smooth powerband though.