KEEP IT!!! LoL... I have a Cinnamon SGH PT.. and I wear mine over the shoulders... yes it can get heavy at times... BUT.. it's not that bad with the handles over your shoulder. The leather from f/w 07 is awesome, thick, squishy, dense.. just loovveelly.
Plomb is very hard to come by.. and your bag is made of Chevre.. also no longer in production. It's also a super versatile color... it goes with everything.. and its a beautiful dark charcoal grey. Its hard to imagine wearing it now.. but it'd be perfect for the fall & winter later this year.
Plomb and juane are very different color wise... why not get the Juane... and keep the Plomb also?
It's nice to have variety in your collection too.... !!