If it is a spool only stand, you will need a set of spools. Some works with both spools and swingarm. It makes maintenance 10x easier and some repairs/maintenance work cannot be done without it, like taking wheels off.
IMO, I think at the mininum everyone who rides should have at least a rear stand (unless your bike came with a center stand). Just makes lubing chains much easier; Which I am sure you all know it should be done every 500~600 miles or after riding in the rain.