Your thinking in my opinion is spot on. The police trade in K9's can be really nice. But for concealment in pocket or smart carry etc, I'd lean towards the CM9 or the PM9.
If weight isn't a factor definitely the K9 or MK9. As you mentioned it's all about weight in those less than traditional carry modes.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."