I see your point about the safety, but I personally agree with the empty chamber and safety off. The gun is racked as it's picked up and is hardly any slower than flipping the safety off.
Yes, it gives away your position, but I figure most people coming into my house are going to be thieves that thought I was not home. Most thieves do not carry guns.
Home invasions are becoming more prevalent in my area but like the cowards they are, usually they pick old and/or defenseless targets. Hearing a shotty rack alerts them to the fact they have chosen wrongly.
Racking also gives a family member/friend (anyone have a key to your house?) a chance to identify themselves.
A shotgun racking DOES have an effect on the BG, just like my M6 does. I never would have bought one (M6) if I had not seen for myself how many BG's will stop messin around when a dot bounces on them.
I just got my first shotty for the home and will be using it in 3-gun also. The Copstock is a whole different animal than most pistol grips, and it works well in reducing recoil.
I suppose everyone will have their own tastes, just like the handguns they choose to carry, here's mine for now...