As a rule these bars are NOT round. So you can tear them up trying to push the levers on dry, So grease the lever clamps when you put them on. This has no effect on how tight they will clamp since the bar is sort of square. Mine hold entirely securely. As far as I've seen ALL of the carbon integrated bars are this way. Trying to push the levers on without the grease can destroy the bars.

My bars that look like those have internal cables. They only have a single exit and it doesn't look like both shift and brake outers will go through them but they do. In order to thread them through you mount the inner cable to the lever, and push it in and with good lighting you fish the wire out with the j-bend of a spoke. You put both shift and brake wires through. Then you thread the outer of each cable individually through and pushme/pullyou through the correct hole and into the lever. Be sure whether your type of lever uses an end-cap on the outer (My campy do not use an end-cap) before the threading process and then guide it into the correct spot of the lever. Route the outer cable to its location and then you have to extract the inner cable AT THE LEVER enough so that you can cut the outer to the proper length. This usually crushes the plastic tube inside the outer which provides less friction for the inner cable. I use a toothpick to open this up as wide as it will go and then put the end-cap on for the derailleur or brake if necessary (again my Campy brakes cannot fit an end-cap but the derailleurs do). This complex procedure that is open to screwing everything up is another thing that has turned me off of integrated bars.

Concerning the outer cable cutter - I have tried several different brands but only the Park seems to make a clean cut on the new high strength outers whereas the Pedro's used to work better on the older cables. The outers now are 4 mm for shift cables and 5 mm for brakes when the brakes used to be 6 mm. Also now I use the plastic end-caps instead of the metal ones that there is no "factory-type" tool to lock either cable endcaps or inner wire end-caps and you end up having to crush the inner end-caps but if you do that to the outers they will not fit into the brake or shift sockets.

I've paid a small fortune buying tools that promised to set these end-caps properly but no dice.