I don't have a downer on Ray. He is a talented writer with a good voice.
The problem for me during Ray's brief stint in Genesis wasn't him at all, it was the tragically awful material that he had to work with. The band had lost Phil's arrangement skills (an often unacknowledged talent of his) along with his obvious talents as a drummer and writer, which left a series of dull, unimaginative and sometimes cringeworthy meanderings which Ray was called in late to improvise some vocals over. If he was actually at the table as a proper writer and arranger, in there at the very beginning, Calling All Stations could have sent the band in an interesting new direction. Instead the album turned out to be something that I'd be embarrassed to use as a coaster, which was a first for me in relation to Genesis.
None of this was Ray's fault though. He just wasn't properly integrated within the group and the big shame for me was that there was no second album with him (and maybe even Drennan) having a proper seat at the writing table.
I like his solo work and I think the Genesis thing with Ray was a massive missed opportunity.