It's unlikely anybody here knows. Did you ask on Meteor support groups?
It doesn't seem a very attractive option to me, though. JQM 1.4 is aging and starting to break. JQM 1.5 is finally in alpha, but probably quite a way from release yet. It would be a risky move... for what?
I'd guess it would take a LOT of work.
A quick search finds only failed attempts, going back to 2014.