I bought three of the Domaine Ste Anne Cuvees in the 2009 vintage.
The Notre Dame de Celletes (70% Grenache - £85 per dozen EP) started drinking well (in my opinion) in late 2014 (almost two years later than the suggested drinking window started). It was still going strong when we drank the last bottle in 2017 - and no doubt would have gone at least to the end of the window in 2019.
The Les Mourillons (100% Syrah - £60 per six EP) didn’t (for me) start really drinking well until 2016 (suggested window started in 2014). I only had 6 and the last was drunk earlier this year. I think it was still some way from peak but excellent.
My favourite was the St Gervais (Mourvedre, Syrah, Grenache -£120 per dozen EP) needed six years to come around. My cellar book states “still very tannic” in 2015, “coming round” in 2016 and “drinking well” in 2017. Must try another bottle!
I’ve not tried the Les Rouvieres but my experience above suggests you need to wait at least 5/6 years for these wines to hit their stride. They are definitely worth the wait.