Salvatore Liccardo made a blogpost ‘Identical Strangers: The History of the Heruli Between the 3rd and the 5th Century’, ÖAW 12 October 2021. It is part of the project Visualizing Semantic Landscapes in Early Medieval Europe (MMP), coordinated by Walter Pohl and Veronika Wieser.
To the passage mentioned by the author (Carm. 34.31 in Ep. 8.9.6 to Lampridius: hic glaucis Herulus genis vagatur) one can add Carm. 7.235-6 vincitur illic / cursu Herulus, Chunus iaculis Francusque natatu.