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Pros - Excellent traction, tight forefoot lockdown, good forefoot cushion
Cons - Heel lockdown not secure
The CP3.VI is a great guard shoe and, for a smaller guy (5'7" ~150 lbs.), these are my current go-to shoe. The highlight of this shoe is the traction. I play on an indoor court, but it hasn't been well maintained in recent months. It's been pretty dusty as a result and some of the other shoes I played in really struggled (Adidas Rose 3) or were inconsistent with moments of slippage (LeBron 9 Elite, Jordan Wade 2 EV). The CP3.VI were squeaking on the same courts and the traction was superb.
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.