The only links that I know to be workable with the 11 speed chain are the SRAM 10 powerloc and the no-longer-made Wipperman 10S1. The width across the inner plates is the same as the Campy UN 10 speed chain. I tried a Forster superlink model 4 and it clicked every time it went over the cassette. KMC has a new 11 speed chain, but it's just now coming out. I've not found it available yet.

About the chain tool. Park has a new tool that is made just for flaring the end of the new Campy joining pin. Another tool is still required to install the pin. Just about any 10 speed chain tool can be used to break the 11 speed chain and install the pin, if you're careful. Even an older tool can be made to fit the 11 speed chain with a little filing. The center U-shaped support on my old CT-3 just needed a little filing on the drive pin side to make the support thinner and allow the outer plates to move further back, so pressure is not exerted on the inner plates.

Installing the pin is much like the HD-L pin. The chain should be draped over the BB shell so there is no tension on the chain, while the pin is installed from the left side. The guide pin must be snapped off, just like a Shimano pin. After that, the flaring tool is used to flare the right end of the pin, when the quide was snapped off.