Yeah this was a tough call, because on the one hand the response must match the RazorView model - which is what Response DTO's do :)
And on the other the Request DTO's are unique, so I was thinking more along the lines of conventionally picking the most likeliest times the models will match - which is why I went with the Response DTO.
But I might change it seeing that Request DTO's are unique and can allow for your scenario of services re-using the same Response DTO with different views.