Mine is cruiser ready, as well. And as far as betraying my position by racking the slide, I look at it this way. Unless the BG is high on PCP, the sound of my 870 chambering a round is gonna scare the crap out of him. EVERYBODY instantly recognizes that sound, and unless the BG is brain-dead or flying higher than a 767, he's not gonna stick around to confirm that the sound is what he thought it was. And since my objective is to get him the hell out of my house, and NOT hunt him down and shoot him, I'm good with the psychological effect of that sound.
In the case of somebody entering my home in the dark of the night, I have a 4-step plan:
1) Grab the shotgun
2) Chamber a round
3) Take cover
4) Call 911
Unless the BG enters our room, I'm willing to wait for the cops. My aim is to defend our lives, not our stuff.