Was really tempted to skip, but I can't help myself.
If you want to get whatever you have clipped to that biner attached to the rock and clipped into your rope as efficiently as possible, put the gate in. Gate in is faster to rack, too.
Oh, you're asking about racking for sport climbing. Yeah, OK. If you were climbing and placing pro, you'd want the gate out and down if you had more than one piece on the biner so that you could get it off the biner ASAP and with the least clusterf#%k, but then clusterf#%k is really "in" these days.
As for gear slings being impractical and useless - only if you never climb any cracks bigger than your fist or any corners that require "body English" to stay on. But, then, climbing cracks and placing pro are just leftover relics of a bygone era.
Some good replies and logic by Rgold, skully, mark, & Degaine. Thanks, if it ever stops raining I'll check it out. With cams or nuts racking gates out seems like it would be easier for the gear to slip off since u kind of turn it upside down with your thumb when taking it off the gear loop.
Not meaning to offend anyone who uses gear slings. Around here off- widths are not often encountered. I guess if I climbed somewhere with more of that style my opinion might be different.
It seems like for sport routes gates out could be quicker but if your already sport climbing you might as well just hang the draws with a stick clip :-) Haha how many ppl who use gear slings also use stick clips??
I have a certain partner who(when we swap leads)just grabs the sh#t and throws it on his harness any which way.No thought to it,doesn't care,"Whatever,just give me the gear" type guy.He's climbed all over the globe and has a lot of impressive ticks under his belt.He's still above ground and still climbs this way.It's actually quite funny to watch('til someone loses an eye). :-0