I'd imagine that the plan is to do something similar to what WW is doing today, offering an interface to connect to a third party coordinator. Since the SW coordinator is down we'll have to wait and see whether they'll flock to WabiSabi, if the SW coordinator comes back online after trial (in case running software is still legal then), or whether other coordinators for Whirlpool will pop up. I'd imagine that this also depends strongly on how the Tornado Cash trial turns out where they're trying to criminalize building UIs for privacy services. 

For WabiSabi there are already a few coordinators with decent liquidity, which imo is the better choice as its easier to protect your xpub in a lightweight client but bullish nontheless 

https://wasabist.io/