Buuxi weedha soo socota: At FIL European Luge Championships, Gruber wuxuu ku guuleystay sagaal billadood oo leh laba dahab ah (Ragga laba-labo: 2008, 2014), afar lacag ah (Ragga laba-labo: 2004; Kooxda isku dhafan: 2004,
2006, 2013), iyo saddex dahab oo naxaas ah (Ragga labiska: 2006; Kooxda isku dhafan: 2012, 2014).