I have no intention of getting rid of the Sub-2000 while the Ruger looks like that. It's flat out hideous, either in its original form or this new MLOK style.
I'm not saying the Kel-Tec is beautiful, but it's super light and folds in half.
I contacted Magpul to ask if they were making an X22-like stock for the Ruger Carbine, and they said they couldn't talk about upcoming projects, which hints toward "yes".
If that comes out (X9?), then it's a different ballgame because a 9mm carbine that looks like this would be worth having:
Attachment 276325