I love my folding saws Frisket. I've got a pruning saw (sierra) and a Swede saw. Tried them both out last weekend in a similar project.
I think I like the sierra better. The swede saw is GREAT. It's light weight, only slightly longer than the sierra and cuts very nicely. It's just a little more fiddly and I worry about the blade being so thin compared to the sierra. I use it all the time but decided to put sierras in my kits.
I cant speak the the quality of other Folding pruning saws in the handle and blades but The stihl Seems built pretty well. The major downside to the stihl saw is the price of the blades. I may very well have to purchase a Coghlans Saw simply because replacement blade costs. Stihl does in fact sell a sharpening kit for their pruning saws so I may look into that.