OK, thanks for explaining. I understand the bit about the nodes being the gatekeepers and how that played out with Segwit.
So with mandatory lock in for BIP110 in August is a chain split inevitable?
And the key factor is how many nodes run BIP110, is that correct?
What happens if 10% of the nodes run 110 and 90% don't?
Does that mean we have essentially a hard fork, as BIP110 nodes will reject any blocks and transactions that non 110 nodes relay or broadcast?
Is that two separate chains and two separate (cough, cough), tokens?