Shaykh al Ninowy is not based in Cape Town though he is often here. Many times a year. This masjid is supposed to be a Sunni Masjid.
to which sect does this masjid belong? The other link you posted on the hebdo scum forgiveness also cites this masjid
http://madinainstitute.org.za/shaykh-dr-muhammad-bin-yahya-al-husayni-an-ninowy/ has ninowy moved to sa?