You bet. Just be careful that the bag doesn't melt when touching the sides of the pot you're boiling the water in. I've used some cheapo bags that were not good for the boiling method.
If serving for a group you could just throw it all in a crock pot and reheat that way.
If you're going to freeze it for use later on, then the vacu-pack will keep the freezer burn away. But for a short period like this you'll be fine.
Oh, and I'd pull it the same day you smoke it. And add some of the leftover juices into the zip lock bag(s) and maybe some of SoFlaQer's famous finishing sauce.
I don't own a vacubag machine either. But I've had good luck with Ziplock's new off the shelf vaccum system. They only have gallon and quart bags and you have to pump by hand (like an old school sports ball pump). But it's pretty easy and works very well. They sell them at out local grocery store and I've seen them at Target too. Pricey, but they'll keep you're leftovers fresh for several months.