Yes. Many years ago. We did it in six days, stopping at:
Balmaha (hostel)
Inversnaid Hotel
Crianlarich (hostel)
Inveroran Hotel
Kinlochleven (hostel)
Banavie (B&B)
Most of it is fairly flat - surprisingly - with only the Devil's Staircase being a bit of a climb to get out of Glencoe.
Done it in 6 days but bit tougher than I thought loch lomond section is a killer once get by there is a lot better .But still enjoyed great experience but think wud of enjoyed more adding day or two