Yeah, I wouldn't be surprised if Torch could install Chrome apps too if it uses Chromium.
alakazam, why would it be better if they made their own plugins and opted not to allow others? I mean if they use Chrome's they can tap into an already massive library of choices for users. Plus it would encourage people to at least try Vivaldi if they knew their favourite plugins would go with them.
Making their own though would be slower, have far fewer choices and take time away from working on the core browser and making it great.