Are standard Modern Greek and Himariote Greek dialect completely mutually intelligible?

There's a dialect of Greek spoken by the Greek minority in southern Albania (https://en.wikipedia.org/wiki/Himariote\_dialect), which apparently retains many characteristics of ancient forms of Greek that are no longer present in modern standard Greek used in daily life in Greece.

Is it then completely mutually intelligible with modern standard Greek? Or are there some difficulties for Greeks trying to understand it?