I tried breaking a few chain segments with a little Fabric 16 multi-tool just now, for the sake of science. The Fabric 16 chain tool is pretty small.

Ultegra 11 speed was cake. The mushroom pin popped right out. Just about any reasonable multi-tool should suffice for this chain.

A KMC 1/8" track chain didn't even flinch. I thought the little tool was going to break, Had to give up because my fingers hurt.

The CT-3.2 is a good shop tool but I got one with a bent tip from the factory.

-Tim-