K-4s were delivered with wing gondolas. They COULD use kits.
They did not ever use them operationally is the concensus.
The gondolas degraded performance so badly that they were not used, especially at this time, late in the war, when the allies had superior performing planes and massive numbers.
Now consider this:
The 109K-4 COULD carry gondolas, none did for survival's sake.
The 109G-10 saw service the same month as the K-4 did, and would have had less performance.
The 109G-10 would face the same enemy as the K-4.
So, if the K-4s were delivered with gondolas and none were used that way, why would the G-10 use them?
IMO the G-10 shouldn't be readded. G-6/AS maybe G-14/AS. However, *if* a G-10 was added it should probably have the same lack of weapons options as the K-4 has now, only with a 20mm nose gun instead.