Yes, I use CC caps sometimes. Sometimes I notch. If I'm dropping a beam onto 15-20' tall posts, I'll use the CC caps.
Posts under 10' are usually notched, unless folks want the hardware as a design element. Then, it's usually powdercoated.
What part of the process do you think will be sped up by using them? and if you're going for speed, use the CCQ hardware w/ the SDS screws.
Much faster than drilling holes and installing (6) 5/8" bolts through the CC caps.
Yes, you can use them on a 2nd story deck. However, they are not enough by themselves to deal w/ lateral loads. You'll also need either knee bracing or decking face-screwed at an angle to the joists. You might want to take a look at this thread -
2nd story deck w/ CC caps.
I'd recommend getting an engineer involved to dial in the load requirements (lateral, shear and weight).
Mac