I picked up an Eagle Talon Ultralight earlier this year, and when summer came, it was probably my most carried EDC. With micarta scales, no liners and a narrow blade, it weighs as close to nothing as you can get in a 4"-blade folder, making it ideal for carry in shorts or lightweight pants.
The clip design is unique to Al Mar. There's a hole through the handle, like a lanyard hole, but threaded and with a notch on either side. The clip has a single screw hole with a small tab that matches the notch in the handle hole; one large screw holds it in place, while the tab and notch set-up keeps the clip from rotating around the screw. Very simple, very effective. I'll be taking some other knife pics tonight, I'll try to add a couple of the clip later.
It's definitely a lightweight knife, not the sort of thing you'd use to baton through a log, so I'm not sure what you'd consider appropriate "heavy use". But the blade is ground from ~1/10" stock, so it's not exactly flimsy, either. I've used mine for the usual mail opening, but also food prep, cutting up cardboard boxes, opening those dreaded clam-packs, slicing rope and cord of various sizes, a bit of light whittling, etc. and it handled it all just fine. Despite the lack of metallic liners, the micarta handle is fairly thick and quite rigid, and the shape of the handle is quite comfortable for such a slim knife.
