I don’t see why it wouldn’t work but I don’t think it would be as warm as a baffled quilt at the 40 deg mark.
With a sewn through design I would think it would be more critical at the lower temperatures (40-55 deg) to have the down distribution be even since there would be potential heat leakage at the seams. The KS method would allow a lot more shifting of the down throughout the entire quilt than with the traditional sewn through design, and probably require more work to shift the down than with a baffled KS quilt. If you are willing to even it out every time, then go for it. Just remember to post pictures and a trip report with your awesome new quilt!