Having been a structural engineer for over 35 years Iíd much prefer drivens, despite the extra work.
In my experience blinds donít hold up as well over the long term in joints with significant load transfer and theyíre more prone to corrosion than drivens.
That said itís entirely possible to design for blinds and use drivens in that small number of locations on the airframe that warrant it. Then you just have the cosmetics which everyone will have a different option on.
Thanks to Vanís for continuing to create new airplanes! Iím sure the 15 will be another excellent bird no matter which way they go.
RV-4 (project sold off eons ago)
RV-10 in planning stage
Aerospace Engineer 1986