The blade geographically closest to Laz Bicagi is Surmene knife (town of Surmene close to Trabzon).
There were two interesting offerings on ebay recently.
First, this one:
Please notice swelling of the middle section of the scabbard: just the same idea as Laz Bicagi in the original post
Second, a couple of knives with typical multifullered Surmene blades. The single scabbard is rather neat: just like some Chinese weapons or a pair of Persian swords in Topkapi.