J.M Bernstein describes John McDowell’s work as attempt to go beyond the “interminable oscillation” between ‘bald naturalism’ and ‘coherentism’. Bald naturalism “upholds the empiricism requirement by forsaking autonomy of reason, reducing the space of reason to the space of law”, while, coherentism “aims to resolving the difficulty by surrendering the role of sensibility and experience, thus making nature at most only causally but only rationally relevant to epistemic claiming.” (J.M. Bernstein, “ Re-Enchanting Nature” in Reading McDowell : on mind and world, pp. 217-245, here p. 217.)
This way of describing the project of McDowell has strong parallel with Habermas's weak naturalism. Habermas on the one hand differentiates his weak naturalism from what he terms as strong naturalism which is obviously another way of describing what McDowell calls bald naturalism. On the other hand Habermas differentiates his project from linguistic idealism (Heidegger is the main culprit here). Heidegger’s so called linguistic idealism has been described by Habermas in terms that parallel with the description of coherentism above.
The only difference in my opinion is that Habermas as against McDowell (who is still working with an “empiricist” conception of experience) construes experience in much broader terms and gives it a pragmatic reading.