OH. HELL. YES!
I can't remember the last time Krist and Dave Grohl played together, but that all ended the other night (12/5/17) in Eugene, OR when the surviving members of Nirvana got together at a Foo Fighters show.
This isn't the first time they got together since Kurt Cobain's death in 1994, but it is certainly is a rare thing.
It certainly is clear in this Tweet from Krist how much he loves his former bandmate.