Off topic… But i disagree totally and think that they were right to remove this…
It was making it too strong… I really prefer variety over clones…
When I was seeing close to every mission with someone using a bolter, it was for me annoying.
Actually I checked, you find really MORE players using revolvers. However, it is MORE if we compare before patch 13… so if we compare to a time where using revolver in Damnation was seen as crazy (I have got several times people asking me “why revolver in damnation???”).
However, even if we see more players using it, I have seen also lot of infantry gun, lasgun, psyker staff (i have even seen someone using ONLY assail). I have even seen flamer… wait… sorry… it was me 
I think that there is more variety since patch 13 when we look at what players use. And revolver is not seen at every mission, we are far away of this…
Actually, what we can see a lot? Ogryn kickback everywhere. Strange… I wonder why.