Unless something big changes, our mountain biking has been about 10x better than the skiing so far this winter. So DEFINITELY bring the bike. And even if you’re doing a mostly skiing trip, usually there’s some good MTB to be had. But it does depend on how the storms set up… occasionally we do get snow down low (like an inch last night), but it usually melts quickly.
Check this page for the latest conditions: https://www.absolutebikes.com/about/trail-conditions-pg64.htm