Originally Posted by Campag4life

Here's the thing. Trek spec'ed...not sure if 2012 Madones are this way...a 'slip fit' aka drop in for bearings. If you use the analogy of a headset...most headsets use a slip fit/drop in cartridge bearings and sustain much higher axial loads than a BB...then there is no problem with even slip fit bearings IF...there is adequate preload which pressurizes inner races against balls against outer races firmly bedding them.
The reason why Specialized spec's both loctite and a press is because this makes BB's typically quieter if the installer isn't as vigilant about dialing in preload. Provided bearings are in good shape...clicking BB30 bearings are no different than riding around with your headset loose...it will rattle and knock over bumps as the bearings loose their seat and balls lose their preload to inner and outer races. A bearing is like a rattle or a tambourine without preload.