Lower wheel weight shouldn't matter (no real benefit) unless the rider has shed excess weight (big bag, baggy clothes, u-lock etc). No reason to sacrifice strength for a negated weight difference. Strength is more important for the rear, of course. Have a little fun with your front wheel.

I have a friend with a front 3L/3T pattern, and it does look sweet. I have my rear done in a 36h 4x pattern which is as solid as they come. My front is a 32h crow's-foot-alternate-radial which is pretty sweet too.