Removing the radar detector is really easy. Just leave the mount on there though as it is a bit PITA to remove and all. There is a lever above the radar detector that's on the blendmount that you press up and just slide the detector down. Takes about 2 seconds to do, so you can remove it np.
I am not using the MirrorTap, I have the Escort Hardwire kit running from the BCM accessories port. I don't like AutoMute function nor do I want to reach to the detector to mute. Sometimes, I like to keep the KA band keep beeping, sometimes I don't... Just one of those things about having total control haha. Why I love manual transmission