I ran four EML meshplates in an Audio Note Kageki amp (parallel single ended). I liked the sound very much. The meshplates delivered a BIG sound -- rich and saturated, extremely wide soundstage and sound that seems to envelope the listener. It was quite a contrast with the non meshplate EML 2a3s which have a tight and punchy sound (I like those tubes too). The EML meshplates are my favorite 2a3s, both current and vintage (have not heard vintage meshplates in the Kageki).
But, if someone characterized the meshplate sound as "phasey," and did not like it, I would understand. It does sound a bit big (sound is everywhere) like when two channels are out of phase with each other, but, images are precise and solid, so in that sense, it is different from being out of phase. The meshplates have a sound that is vivid and exciting, but, I read someone describing this quality as being like "Technicolor" (meaning more exaggerated than reality) and this, too, is a valid description.