None of the faces that I’ve tried are displaying the heart rate complication – but if you tap in the area where the complication is supposed to be, it’ll open Heart Rate. I’ve experienced this on the California watch face and the Activity Analog watch face as well.
My S4 went from 15 crappy hours battery life before the 10 update to now getting less than 12 hours on the 10.1.1 update. I know that the battery is not in good health, but this series of updates really made the watch almost a burden rather than a useful tool.