I vote for Grolsch, but on occasion, when pursing the elusive fish on our local waters, I take the BOB LAWLESS approach:
Vest pocket #1 - tall and narrow, to fit the 1985 bottle of superb white wine, crafted in in a small, and heretofore unknown, pocket vineyard in California. The grapes obtain their nurishment from a creek running through the vineyard. The creek contains a band of 12-16" German Browns, who are quite partial to a #18 Royal Wolf drifted just so. The wine is known for it's fruity-oakey-sweetly fishy-bratwurst flavor in the mid 1980's batches.
Vest pocket #1 attachments: When fishing with reds, I have a velcro anti-tip attachment that allows me to bend over at the waist and unhook fish with out spilling any of the wine while it is breathing for the prescribed time.
Additional pockets = Aged cheese pocket, padded pocket for European crystal wine glasses, cork screw pocket, red and white checkered table cloth pocket.