I just ordered one. I'd looked at the possibility before but had missed that they custom build them.My two keggles can only handle a 10" wide chiller. Cool! I wanted a faster chiller, but also wanted a second chiller so days I brew 20 gallons, using two mashtuns, and two keggles/burners, I won't have to chill one batch, and then the other. This way I can run a splitter below my outdoor faucet and chill either/both batches when it's time to do so, using two IC's.
BTW, when SS chillers first came routinely available I bought a 25-footer and used it maybe twice. Super slow compared to copper as stated above, and IMHO not worth it, although I don't brew LODO.