I bought this sword. It's pretty awful. Straight up 5mm, no distal taper until the last few inches of the blade, which makes it feel like a crowbar. Also whoever "finished" the manufacturing on the belt sander did an uneven job, grinding one side of the blade deeper than the other, and left divits in the surface. Specs say 1lb 11oz, but mine is 2lb 2oz. A sloppy, rushed job.
I believe a peshhabz still is a type of shashka, though may predate it to areas further south from the Caucases. Looks like Hanwei took a lot of creative / historical liberty with this reproduction. The accesories are stainless steel rather than brass, the blade type is different from historical sabers, and while the tang resembles a peshhabz, there are no "ears" to the pommel, no split section at the base of the handle, and considerably more weight near the pommel here, due to the tang shape. Also, the angle of the handle seems different to the early sashka, when there was no canting of angle relative to the blade, as later became common. I still bought it.