I personally wouldn't store it for reuse. I mix a batch and clean everything with that batch and then dump it out.
...and then quickly realize I forgot to clean something...:slp
Been lurking here for a little while and decided to introduce myself. My wife and I have been learning about and enjoying wine for a few years now and we've decided to try and make our own. I currently have a batch of Skeeter Pee brewing, and should be racking that into a carboy this weekend...