view .gnumeric files in mc (in console)

[Fourhundred Thecat <400thecat gmx ch>]

Hello,

has anybody figured out, how to view gnumeric files in mc (in
console/text mode)?

I am aware that this can be configured in /etc/mc/mc.ext, and I see
there is already section for excel files:

  type/^Microsoft\ Excel
        Edit=true
        Open=(gnumeric %f >/dev/null 2>&1 &)
        View=%view{ascii} xls2csv %f || strings %f

Gnumeric has a utility ssconvert for converting into other formats. Can
I use it similarly as xls2csv in the example above?