I actually hope Litecoin does adopt Segwit, because afterwards it will prove no-one uses it and no-one wants it.
every bitcoin project and developer that's currently stymied by the bitcoin stalemate will move over to have a play with litecoin, even if it's only for pure proof of concept.
I ain't got a clue what the price will do, but the only way litecoin's usage is going is up. it can't be much quieter than it is now anyway.
if its for proof of concept, you can do it with 0.01 LTC.
Most of the volume will realize segwit doesn't do anything that special, doesn't make litecoin special, and the bubble will pop.