It seems like this shotgun could be great for law enforcement. Non-lethal bean bags in one tube and slugs or 00 buck in the other. Anybody else think this is a possibility?
but the people that designed it in the SA thought it would be a good idea for cops.
No, law enforcement tries to keep lethal and less lethal weapons completely separate.
Even still there is accidents.
For example here is a 2009 case where an officer tries to go for his holstered taser to shoot a down subject, but pulls his sidearm from its holster instead and shoots the suspect who is already down on the ground unarmed in the back killing him:
http://www.youtube.com/watch?v=S0P8TSP2YJU&feature=related
In a stressful situation, with a clearly antagonizing crowd nearby the stressed officer pulls the wrong weapon from his holster which results in the death of the individual.
The officer states he meant to pull his taser, which from all accounts and the evidence (including multiple videos taken by different people) supports this. He was as surprised by the gunshot as everyone else.
Multiple similar cases have been noted elsewhere in the nation. A Maryland cop was found not guilty after going for his holstered taser and accidentally pulling his gun and shooting a man who was running away.
In the decision the court cited numerous case law precedent for the 4th District (which includes multiple states) where officers accidentally shooting or slaughtering people were found not guilty, even when due to negligence.
(And these are just cases where the officer admits to accidentally using lethal force, not the many where they claim a perceived justification after.)
Now consider how much more difficult it is to draw the wrong weapon than having a selector switch on the wrong setting.
People would frequently be accidentally killed if you mixed less lethal and lethal in the same weapon.