A katar is a katar till......

[Jim McDougall]

Thank you Nihl!
This 'Garsoe' topic has got me going and I saw a post of mine from 2012 where I asked (rheotorically) I wonder what that term means?

I found a post by Jens about that time, where he had found a coin from 1871 with an image of a katar with distinctive curved ends on the side bars.
This is atypical for katars (as are the scrolled side bars on 'garsoe'), and the coin is from Nawanagar on the Kathiswar peninsula in Kutch .
It is noted that the suffix 'GAR' (=fort).

In Kathiwar (also in Gujerat) the Kuttee people hsve a key affinity for the katar and regard it as a symbol of honor, to the point that any agreement, oath or contract is signed with the mark of the katar. Any breech of said contract is considered dishonorable and requires 'traga', often simply a cut by the katar but is even more dramatically suicide (seldom carried out).
There are talwars which have a katar marked on the blade, which we presume from these regions.

It would seem that the katar has an unusually key significance in these regions of Kutch in a traditional and symbolic manner, and clearly a certain application of 'design' seems afforded the weaponry there.
The 'garsoe' and this other Kutch form with upturned side guard noted (as pictured) seem to reflect such design features of these regions.

The note on 'GAR' meaning fort gives a clue, that perhaps the design for the garsoe might be attributed to an armory (?) in a local fort in Kutch, where such design was fashioned for someone in the princely retinue, or other person of standing

Going through references, this is what I can find thus far. The entry by Jens where he matched the coin to the shape of the katar hilt illustrates the kind of astute research he carries out on these weapons. Amazing!

While speculative, perhaps tenuous, these factors are worth considering.