Yep, at 15 kts direct crosswind the rudder on my RV-6 is pretty much all in to keep the plane aligned with the center line. You can land with some crab but it won't be a landing you want ground bounders grading.
I'm not sure what to make of the claims for much, much higher crosswind capability in the RV-6. I see them every time a thread like this appears, 20, even 30 kts crosswind....just don't understand how the physics of those planes is that much different from mine.
A lot depends on the characteristics of the crosswind, a smooth wind with no mechanical turbulence is much easier to cope with than 15kts with rotors. When 15kts comes rolling over the buildings adjacent to our runway the RV-6 is quite the handful.....and the landing can be a bit noisy....