^^^Nothing really.... may do so at the weekend.
I think that the approach from Costco is the preferred one (having seen that video)...however I think that more relates to tyres that are heavily worn, the theory is that if you all of a sudden have more grip on the front than the rear...your car handles differently to the way you'd expect and the back end can tail out...(or something).
In my case my rears have loads of tread on, so I dont think that this is any danger.
Having inflated all round now to 36, I am delighted to report that the ps3's seem to be providing a more assured ride (that said, how much it is to do with the newer assymetrics now on the front, I don't know).....
Hopefully the mich's will last a little bit longer than the GY's.....