Dude read my posts again - I'm not disagreeing with you on your (obvious) points.

If it's cheap and easy, with no downside, of course do it! (duh). Even if it's expensive and you can afford it, go crazy buy it as long as it's not messing something else up.

My point still stands though - if you're a MOPer (like me), the equipment choices after the basic level of a decently fitting road-style bike (not even TT bike), are strictly marginal. Do it for fun, not because it's taking you to the next level of performance.

With regards to your 2 watts saved for 4psi, I'm with the author on this one. I don't care enough about 2 watts saved (statistical noise) to deviate from the typical psi I run in training. I would literally ignore that recommendation completely as if it didn't exist.