Nice!
Though I think I've given up on the Prera even though I love the CM nib.
I moved its CM nib over to a WS698 and it's been lovely there and hasn't lost a drop. I've had it inked since February and use it several times per week in my hobby log and it's still got a lot left in it.
The Metro is a cheaper source of CM nibs, though, and they also don't seal well. I moved my Metro CM nibs to Kakunos so I could at least keep a better eye on them.