I've gotten mine in, and I'm generally impressed, with a board that fills it out I feel very safe going about my day with it. However for some of the larger sizes it (atleast for me) becomes an issue that there isn't some strap to hold the board, as there is too much space, and thus it will move back and forth.
But nothing that can't by fixed by just having some extra padding in it, or just stitching in something to press it to the side myself.
Compared to other carrycases/bags that I happen to have I would find these the most usable. As it offers good protection, along with the shoulderstrap making for easy carrying, and maintaining a fitting thickness.
So looking forward to an eventual round 2 so I can get more green, as those look fantastic. (Also please add a closeable cable pocket)