I'm a small time landlord. I typically buy a rundown house and bring it up to the neighborhood as part of turning it into a rental. When working with latex paint where I will continue painting with the same color within weeks, I put the brush(es) and roller into a plastic grocery bag, push out the air as much as possible and wrap tightly around the roller handle and then repeat with a second bag. The bag with roller/brushes goes into the refrigerator (house is vacant ). I've kept brushes well over a month between uses in the fridge. Works better when the fridge is not at your residence although my wife has leaned to tolerate a brush bag in the fridge for a few days at a time at home. Don't do this with oil base paint or use the freezer for brush/roller storage.The big rectangular shape washing detergent plastic jugs are just the right size for a paint roller.
..Set the roller in the bucket 3/4 full of water for a half hour as you clean up the job site. Just dump the water-soluble paint on the lawn so it doesn't spill in your truck
When you get home refill the bucket (with the roller) to soak for overnight.
Yes, give a hose spray in the morning to make it like new.