Over next fall, I plan to re-build the rear wheel on a bike that has a 7-speed freehub, eyeletted Fir tubular rim, on a Shimano 105 hub. I plan to use 14/15 DB spokes 3x on the drive side, and 14/16 db spokes radial on the NDS. Here is my question:

I've seen semi-radial spoking done with the heads in, which is probably the strongest laterally, but looks kinda bad. Heads out looks nicer, and is probably more aerodynamic, but is probably less strong laterally. I was wondering if alternating in/out on the radial side would have any benefits, and if it would just look odd. Has anybody ever done this way of radial spoking?