there is some limited discussion about creating a serious URSF110 client, which would reject blocks that signal for BIP110 under certain circumstances. I made a proof of concept here to illustrate how it can work: 
but unless/until something like that is widely used, yeah, bip110 blocks are not likely to be followed by any reorgs
GitHub
GitHub - supertestnet/URSF-110: A POC app for using bitcoind's "invalidateblock" command to reject BIP110
A POC app for using bitcoind's "invalidateblock" command to reject BIP110 - supertestnet/URSF-110
