I wonder if my buyer's walked. Just Kidding. I did one like that 2 weeks ago, but there were up to half inch gaps between the boards. It would have been so much better/ easier to just skin over the skip sheathing with a panel sheathing. I just told my buyer's that it was wrong, because some of the nails were hitting in the joints (not hitting sheathing). In your case, I would say that it is unconventional, and that you can not predict how well this system will function in the future. You could always fall back on the manufacturers sheathing requirements as well.