Decisions Decisions...HELP!!!

Hubs and I are buying a new couch...think Restoration Hardware/Belgium Style but with more quality (sorry if I offended anyone) I love their look but have heard horror stories. We are looking at a couch through Highland House or Lee Industries. We like both. The decision part involves style.

Highland House is a bench style sofa with stream-lined track arms and three prop pillows you sit against. We picked a beige/brown fabric with 80% Rayon/20% Linen

Lee Industries is a bench style sofa with maybe I'd call it a half-shelter BUT it is slip-covered! We picked a 100% Linen Earthy Grey Fabric

Anybody have experience with slip-covers...am I going to hate myself? I would not wash it myself but take it to a dry-cleaner.
I also don't mind a somewhat sloppy look but with 100% Linen how sloppy are we talking?
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I know Belgium can go brown but it can also go grey. Our dining room table...sits in same room is a reclaimed wood top table with metal X cross-bar (like RH) but we found an awesome company who makes them for more money but better quality. The chair are a rounded medallion back with linen fabric.
Just trying to pull it all together!!!!!!!!!!!!!!!!!!!!!!!!