I currently use his adapters with Jaco double-pinks on my 18T. Let's just say it's a whole 'nother animal now
I had accidently pressed one of the wheels in slightly crooked a little, so the adapter wanted to slide out a bit but still didn't slip in terms of rotation. I pulled it halfway out of the rim and added a bit of CA, then set it back on fully and it fixed the problem. No fault of his adapters at all, that was completely my stupid doing. Just a tip if you do purchase them.
I highly recommend giving them a try if you can!