Hi Lanesville,
I don’t know the specific layering of the Sherwood Opus (you can list the specifics of the layers here and I’d be happy to make more comments) but you can read more about some of the many factors that work together that can affect sleeping temperature in post #2 here. The first place I would check is the type of mattress protector, sheets, and bedding you are using.
The opus also appears to have 3 layers of supersoft quilting foam (see here) which could be part of the reason as well. The latex would probably be too deep in the mattress to have much effect on temperature control.
Phoenix