@Bsnare - There are two disadvantages with the Eastern Woods Outdoors sewn on OCB:
1. If the buckle gets overstressed and the rivets bend or break, you can't just thread a new buckle on the webbing strap.
2. You have to thread the webbing strap through the buckle every time you use it.
The advantage of the sewn on OCB is that you eliminate the sewn on metal j hook from the webbing strap, which is lighter and eliminates the potential for clinking the j-hook into the buckle when you're trying to setup quietly. (Because there is no j hook in this configuration.)
The j-hook is nice because you can leave the OCB threaded on the webbing and connecting the two ends of the strap is just a lot faster with the j-hook configured webbing straps.
Eastern Woods Outdoors sells a version of the j hook on the webbing strap that is rubber coated to avoid clinking metal sounds when hitching the OCB wire to the j hook. They also sell a version that has an uncoated j hook sewn on to a stronger webbing strap. That's what I buy and use ... I just wrap the j-hook in camo vet-tape and it prevents any clinking metal sounds when hitching it to the wire on the OCB.