... it's that or two chains. i've two cogs (15 and 17) on my fix/fix phil. i like the two against the 52 chainring. it's a respectable gear spread, imo. i'm not a weight weenie, but the ***** adds up. minimal toolkit, tubes, front light, change of clothes, laptop, krypto chain. add in the doing-stuff stuff, and you're talking a serious lbs.-ege.

i guess three queries:

1. anyone ever do two masterlinks on a chain? is this in any way structurally less sound than say a chain without any masterlinks? i've got great tension on the two gears using separate bmx singlespeed chains, and i'm wondering about chain-stretch and other assorted trivia.

2. extra chain storage if you pack a spare chain. pouch? stash pocket? on bike? what do you personally do to keep the grease off your kit? zip-loc?

3. do those that swap cogs just take a f'it attitude & have a chain that's specific to a cog? it'd be interesting to have a chain soak until ready to use, then lightly oiled.