In the Kohana framework, you can get an inside look at the discussion inside a framework community regarding their adherence to the PSR-1 & PSR-2 standards (hint: they're not in favor).

A commentor asks the question "Will Kohana eventually follow the following guidelines?" and is immediately given the simple response of "no". Other comments reinforce this by pointing out some of the differences in the standards that the framwork follows and what the PSR standards outline.

Other posters make comments about the PHP-FIG group themselves, some of the things outlined in the standards and some of their own personal preferences when it comes to the the standards of their own code. You can find more information on the standards here: PSR-1 and PSR-2.