13.2 vis is interestingly bright for HK Sco. 10:50 UT today. (I have webobs idficulties and will enter it later. I hope.)
I have (unreported) V obs from back on March 3.78 and March 30.69 UT which show HK Sco was at 13.70V on Mar 3 and 13.55V on Mar 30. These were obtained good conditions and the same three comps were used both times (127, 132_1, and 140_1). So your 13.2vis from last night surely points to it being even brighter now.
I will try some multi color obs next chance I have and compare it to last years colors (also unreported) and those available in the literature to check for changes.
Thanks for bringing this star into discussion and good luck with future observations.