I did batch with M 21 belgian wit yeast from mangrove jack. Split half to compare with wyeast's belgian wit yeast, which I use a lot.
Both fermentered at 69 to 73F. No starters. But rehydated the M21 per instructions. 50% raw unmalted wheat berries that I pre-cooked, 48% two row, 2% crystal, and old cascade and saaz hops to taste in the boil kettle at 60, 30, and flame out. Very few hops, maybe a couple, three, ounces total for a 14 gallon batch. 1.044 OG.
All and all, out of the fermenters, the M 21 is drier than wyeast. More subtle flavor, but on point for a daily drinker wit. Been drinking a few blue moons here and there this yeast is close to that flavor, but drier, and a bit more belgain flavor. I would say better than a blue moon, but similar. Probably with carapils/dextrine malt you could clone an (improved) blue moon well.
Interestingly, it was drier tasting than the wyeast but had a higher final gravity than the wyeast.
The wyeast I would have liked a touch more hop bitterness, may add some isomerized bitterness to the fermenter. But the M21 is right as to hop profile.
Force carbonating now and give a final thought, but I'll buy this for a crowd pleasing, easy drinking beer. Might be a perfect yeast to introduce newbies to belgian style beers. My girlfriend likes dry beers but is ok with the flavor of Belgians if not sweet and not overpowering.