No problem with a slipcover. Just take it off and wash it. Slipcovers are made to be washed, and they're easy to care for. If you like the casual look, just throw it in the wash. Sometimes I also do it on the skirt front.
Slipcovered furniture is practical . . .
You can always match them with new d cor by just changing the slipcover. The more conventional upholstered furniture would have to be thrown away. A shame when you note the quality of workmanship in older pieces. As a result, slipcovered items have a longer life. You save dollars and get more use out of your furniture investment.