I'm with Rick, I use the green can of Weldwood too. Have been for a long time, probably 8-9 years now. I buy gallon cans of it at Home Depot. I put it into a ketchup type squeeze bottle from the .99 cent store and that's how I keep on on the bench. Many projects I just squeeze it directly out of the ketchup bottle and spread it out, for detail work I'll squeeze some into a little Dixie cup and dip my brush into that. For brushes I buy those foam disposable brushes. I get em from Hobby Lobby in 50 packs for like 5 bucks. Use em and toss em, don't even bother trying to clean em up. I got turned onto it by a buddy that is also a professional leather crafter. When his now 10 year old daughter was born his wife wouldn't allow her to come out into the shop because of the Barge fumes. This hurt him pretty bad because he would watch the baby during the day while his wife worked. So he wasn't getting much done because he wasn't in the shop. He found this stuff and turned me onto it. It was a life saver too as here in the People's Republik of Kalifornia ordering in Barge was very difficult and expensive. It could only be ordered on the Tuesday after a full moon and then besides paying for it there was a $20 hazmat fee and then a $50 fee to the Central Committee and yep its easier to run down to Home Depot, specially since its across the street from the ranch. its not like I have to make a big special trip or anything.
I do keep a small bottle of the regular Weldwood contact cement on hand (and I have had many of these gum up and dry up on me over the years). The only thing I have found in leather work that the green stuff won't stick too is the ribbon on a zipper. If I'm making a pair of chaps with zippers I glue them on with the regular, eat your brain out, Weldwood. I have found the green formula of Weldwood to be superior for sticking a wide variety of leathers together. I sometimes use some really oily leathers in chap work and the green stuff works better on those leathers than the regular Weldwood, Barge and various other "leather glues" in common usage.
Give er a try I think ya like it.