Now if you don't use the Campy recommended, "200 dollar" chain tool to hook up your 11 speed chain, it will break. If not now, at some point. Because of the smaller tolerances and a special peening procedure involved, your conventional tool will not be able to seat the union bushing into the links properly. It will bend out and take the paper thin link along with it.
Only the mighty Campy tool can properly do the following
while crapping in your wallet :
a) Support the left end of the link by clamping it while pushing the union bushing in adequately with a conical pusher.
b) Split the protruding end by a special hole provided in the tool.
c) Lock the bushing in the link ("locking the link").
Trust me, this is the Cadillac of chain tools. Your grandpa's tool just won't cut it.
Now I myself thought I could somehow get away without 'following the rules'. Oh no. Didn't work.
The following chain failure happened to me while climbing a long hill. I asked my local bike shop to equip themselves with the right tool and had them fix me a new chain. (I think its the right thing to do for them as now, it is likely that customers increasingly show up at their place with a 11 speed job)
Hey, just check out the width of this chain. This is technology right here.
Now start being amazed and see how a 11 speed chain is installed :