I was very close to buying one. They look great. But the price is out of line with his competition. Everything is extra on the bags. You can easily drop $400 - $500 on a front bag with no trouble.
I have a Waxwings and really appreciated the customization that Dave offers. My rear pockets are sized to easily hold my camera, and he added this interior pocket sized for my iPad for use when we travel. The changes I’d make if doing it over would be to slightly reduce the front-rear dimension, and angle the side sleeve pocket openings for easier access.