Is dual booting possible? And would Android pay work ?

I think it would be great to have a daily driver ROM, with all the mods you want. Then be able to quickly reboot to a stock ROM and use Android pay. I know there are odd hacks developers can do to dual boot, and even put an entire ROM in a sort of simlink. It was done on the galaxy s 3 before we had a "African sock puppet" leak us a bootloader unlock. They used a kexec hardboot. I'm not sure if a developer would need to go that far to get Android pay working on a second installation.

So is this feasible?
Is it something that would interest the people in this community?

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