I finally took time to listen to my vinyls, and hence to this split. Well, the NECROVOMIT part is quite excellent, with powerful Thrashing riffing and coherent songs. I have to admit that their name made me fear of something I would not like, but their music stands on its own.
I already heard the MEFITIC tracks live a few weeks ago ago in Italy, yet their music is still progressing. The whole music is totally controlled and ritualistic. The only minor point is that the tracks sound far better live than on studio recordings, but this doesn't decrease the value of their records in my view. It's simply that the band must be experienced live to get a full experience of their music IMO.