May as well repost my reponse from the other thread...

"I'm not saying that the iBike can't be useful, but it is not internally consistent because it is so position dependent. I wouldn't go so far as to say that they suck, but anybody that thinks they are as accurate as other power meters is delusional."

I agree though that using an iBike as a head unit for another PM and combining the data could be really cool.