Adk: I know what you mean, I bought a Strutter this year and ran into the exact same problem. There are curved tabs on the helmet that extend below the brim, where the front part of the Y-strap is. I didn't notice them at first, but after two days on the Colorado with an old pair of Julbo sunglasses, it was driving me crazy. Those tabs were pushing on the earpieces, which in turn pressed the nosepiece into my nose. Distracting and a bit painful after a few hours.
I decided to get an old pair of plastic aviator-style sunglasses with wire ear loops off eBay, then had new polarized lenses put in, they work really well. Used them for two days in Alaska last month, no complaints. I think the trick is to get sunglasses with ear pieces that are attached halfway down the side of the main frame, vs. at top. That keeps those tabs from pressing down on the earpieces. Fwiw, I chose wire ear loops, I figured they'd be more secure if I went for a swim.