ServiceStack.Text.Signed is not same TargetFrameworkProfile as ServiceStack.Text?

I have my own PCL class library which is configured as:

<TargetFrameworkProfile>Profile7</TargetFrameworkProfile>
<TargetFrameworkVersion>v4.5</TargetFrameworkVersion>

I am able to add a reference to: ServiceStack.Text (4.0.52), but not ServiceStack.Text.Signed (4.0.52).
I need the signed version because our assemblies are SN signed.

What am I missing?

There are no signed PCL versions, you’d need to use unsigned packages for PCL clients.

Thanks,

Is that because there is something about strong names that does not play well with PCL consumers?

Unsigned dlls is the default choice and what the different matrix of custom PCL builds follow.