I wanted a 20 originally and got a scott dealer to find me one. None available until November (I think). The issue is getting the sram parts as they are out of stock.
That and the fact its a horrible pooey brown colour also put me off.
In the end I went for the 30 and have been told it was the last one in a size 54 that he knew about until next year. He had a 56 in stock about 3 weeks back but not sure if it’s still there.
He also said be weary of online retailers showing as in stock as they don’t physically hold the stock. They have scott ship them to the shop to be built and sold. Scott don’t have any. Unless you see the bike in person then assume it doesn’t exist.
Also if you are using it on the road predominately then I think 2x is the way forward. I’m glad I didn’t go 1x.