I have prescription Oakley Flak 2.0 XL in both Road Prizum & polarized Shallow Water versions (and extra clear lenses for night riding).

IMO Road Prizums do not cut glare off water to see fish, and my polarized do not provide road surface definition as well as the Roads.

Either are very comfortable for long periods in bright light. My vision in lower light, (overcast), is better with the Road Prizms.

I like to both fly fish and ride. So if I had to choose only one they’d be polarized. And if I didn’t require prescription lenses I would buy inexpensive polycarbonate safety glasses to ride & fish. YMMV