Here's a link for you to know the reason behind Segwit adoption by LTC. It never had anything to do with blocksize limit (I'm a little surprised people are still mentioning that with all the information available). Also, it's primarily bitcoin supporters who view it as an experiment for BTC, litecoin developers are interested in seeing it proceed on BTC; but, intended to proceed no matter what bitcoin does.
https://segwit.org/my-vision-for-segwit-and-lightning-networks-on-litecoin-and-bitcoin-cf95a7ab656b
What I'm looking forward to is the first version of the lightning network being released with LTC as the settlement layer. Based on tests performing well on the LTC testnet likely we will see LN transactions before the end of May.