I have "grooved" running line on several Pike fly lines (Airflo Snipers). and the issue I get is cut fingers when stripping big flies back.
I also have "textured" lines such as the Orvis Bankshot that make a hell of a noise when casting and "grip" the water making a clean shot difficult when wading (I know, its a Bank shot, so should be use on the bank lol).
I prefer a smooth line myself.