I don’t ride a Mondraker, but have a Bird Aeris, which has similar geometry.
I went from a Large Stumpjumper to an XL Aeris.
Taking into account the stem length difference 60mm vs 35mm, the Aeris is still longer in the TT and reach.
So far it’s been great. Took a bit of getting used to as the bike is so much longer, but I love the geometry. Corners really well, ploughs through rough stuff, jumps brilliantly for how long it is.
I’ve had to adjust my riding style a bit, but I’m a fan of the longer reach, shorter stem concept. I think Mondraker take it too far and their bikes are probably the only bike available that I would size down on, as they are so long in terms of reach.
For a number of years I think i’ve been riding bikes that are a bit too small, so it’s nice to have something that fits.