Pros: Excellent traction, tight forefoot lockdown, good forefoot cushion
Cons: Heel lockdown not secure
The CP3.VI offers tight lockdown in the forefoot. The half inner sleeve probably contributes to the great forefoot lockdown. Podulon cushioning in the forefoot is comfy and fairly responsive, although tends to start loosing responsiveness after a couple of games, similar in feel to Nike's recent Lunarlon shoes.
Heel lockdown was a minor issue for me as my heel would shift a little upwards at times. I ended up doing the high lock method here: http://www.fieggen.com/shoelace/locklacing.htm. After doing that high lock and lacing really tight, I didn't have any issues. I also tried regular lacing with double socking and that also worked (generally I don't like to double sock).
Overall, these are an ideal guard shoe. Top end traction, great forefoot containment, and comfortable/responsive cushioning. I probably would shy away from these if I were a bigger player like a 4 or 5, as these might not be supportive enough.