It’s a cliché that you always think of the right thing to say after the discussion is over. I think it’s got some truth to it though. Here is what I ought to have said recently when I was talking about differences between epistemic contextualism and contextualism in the semantics of personal taste predicates.

The semantic contextualist has a real problem with keeping content fixed. It seems reasonable to say that two speakers are disagreeing iff their utterances have the same content, plus or minus a negation operator. The details may get messy but the central idea seems to be sound. It may be that some versions of contextualism try and work with only suitably similar content, but most try and claim it is identical. This tends to lead to problems for them. Not least, how is their view then contextualist rather than relativist?

On the contrary the whole point of epistemic contextualism, at least as I see it, is to deny that ‘knows’ has the same content in different contexts. Again the details are difficult but the line of approach is clear.

From this it emerges that the links between semantic and epistemic contextualism are actually pretty tenuous, at least as far as a unified approach to both topics is concerned. What helps one project in a theory is likely to harm the other.