The only thing worse than a slip lane diverge such as that is a slip lane merge from my right. Many of these lack crosswalks, making the pedestrian (blue) option just as bad as the vehicular (red) path. If traffic is light and/or reasonably slow, I just take the lane (red, or even left of red), but if I know it will likely be fast with no reasonable gaps, I try to work out an alternate bypass route in advance (if such is even available).