Is CiviCRM 4.6 Bootstrap Compatible
4.7 should be, but not 4.6 as is. There was a GSoC student who worked on making CiviCRM more Bootstrap-friendly, unfortunately the patches were not merged in for 4.6.

I've started working on it again, based on Amilineni's work, but I'm slowly moving forward. If anyone beats me to it, I will be more than happy :)

So far, I've been trying to add a few classes to core forms (CRM/Core/Form.php), and try to see if we can override the CSS on buttons using Saas/Less, and perhaps moving a bit of CSS out of civicrm.css so that we can make it optional (to avoid loading extra CSS rules if we are using Bootstrap).