It is funny to note, at the same time, the notion of Christian Hamshetsi (living today in Abkhazia and Russia) instead of using last name as other Armenians (with "yan" or "ian") we prefer (at least in older generations) to use last names differently:
For example, Topal Ardash (instead of official "Topal
yan Ardash")
Avci Suren (instead of "Avcan, Suren")
To give you an idea:
Official Name (ficticious) How we would say it
Seferyan Xachig => Safar Xachig
Meletyan Melik => Malatsi Melik
Zebelyan Ardash => Zebil Ardash
Keshyan Margos => Kashchi Marges
Cholakyan Arut => Chologhli Arut
Chuvaldjan Bedros => Chvalci Bedres
Melkonyan Sahak => Melkon Sahag
Ican Gevork => Ici Kivor
Delyan Vartush => Dali Vartush
Note: some Armenian last names of non-Hamshen origin would be really hard to squeeze into this form of prononciation. Only Hamshen Armenian names seem to be "convertable" like that