I have been using Kilsaran mono this year without any cracking problems but it has always been on their high bond base coat and at a maximum 10mm.
Very little aggregate in it, it is the smoothest mono I have come across and the customers like it. Will defo be buying more as the price is good.
Not a fast setter though, at 20c about 10hrs but my last wall was an overnighter. Sprayed by 7 and scraped back next morning at 7 but it was a tad too hard for my liking. Occupied old house so some heat loss, new build might be ok.
It picks up almost immediately and is a bugger to rule it goes that stiff so spray a bit wetter than normal and you will find it ok.
Certainly will be using more of this stuff and Alan will look after you, even will come and do a site visit to see how you are going on. Their Ceresit bucket coat is good as well.
They don't give any warranty though which is a no go with some private customers.
See you are in the north west, they are In Old Trafford.