I dont do snakes if I can help it. Way too much friction going on.
I use the single legs for everything unless asked. They are lighter as there is less wire in them. Its only about 1mm, but thats still as much a saving as going from thick to thin wire.
The only time I have seen the thin wire guides is when I replaced two for a chap that did a lot of fishing at Newburgh. I guess the salt/sand caused rapid wear.
How is this for a radical thought, use the single leg guides but grind the foot back until its only 3mm. Start the whipping, and once the ring is held, take a spot of super glue and dap the foot. It will run underneath and hold the ring to the blank. Then finish the whipping with three turns infront of the foot to lock it. The ring can still be replaced as the superglue is only holding, not bonding.
The weight saving will be large across a whole set of rings.
Just a thought if you are really wanting to cut weight.