mScarlet in embryo or germline

Model Organism: Worms Methods & Reagents
1

Hi worm people,

mScarlet is reported to work in the postembryo (Boulin lab paper).
https://www.ncbi.nlm.nih.gov/pubmed/28280211
Has anyone tried mScarlet in early embryos or germline? If so, is it brighter than mKate2?