I'll take pics when I can and give them the review they deserve, but long story short, it's a very happy purchase for me.
It's sort of like silver/copper hybrid cables - they provides the best of both worlds, but also have their disadvantages.
They fit like customs- super comfortable, and I don't get the five minute itch to rip the monitors out of my ears to readjust. They also mean that you can let your friends listen to your iems with their own tips and you still get to keep your resale value.
The negative and elephant in the room is the aesthetics. They pop out of yours ears and don't look right. For reference until I post pics, everything after the ridge that tips attach to on the ref 1s will stick out of your ear. Whether or not the aesthetics matter to you is personal of course.
What I can say is that they've reawakened my love for the gym! Listening to top class sound with ridiculous bass reverb that the ref 1s provide gets me sweating at the gym and makes it something I now look forward to. The benefit of sleeves is that it's nearly impossible to damage the iems via sweat. The iems are so far out of my ears and the ears actually serve as a shield to protect against any incoming sweat. Further, it would be damn near impossible for sweat to enter th long tubes of the sleeves and actually travel into the IEM. You can also clean the sleaves with pipe cleaners, so they're low maintenance.
I'll cover more about sleeve comparisons etc with a review, but that should give you a couple things to think about
I think they're a really nice thing to have in your head-fi'er arsenal if you listen to IEMs because they should fit most, and are something you'll actually get years of use from. Absolutely no regrets with this purchase.