hi ! from what i understand Purism ships the new Librem-Mini-v2 (LMv2) out-of-the-box with PureOS-10-Byzantium. judging by this, it seems to me, that Purism believes that it is up to the task.
if you get it and you don’t like it you can do-it-yourself and grab the Amber bootable .iso image from the Purism mirror > https://downloads.pureos.net/amber/live/ < then re-flash.
for me Byzantium works and is ‘stable’ for MY needs … i don’t use it in a production environment though …