I have their long drop cable hanger ($35.00 was too much to pay) works well but you can get a less expensive one from Cyclocrossworld.com now. And I use the 10spd cassettes on my CX bikes. I went with them originally because I could get them with a 28t cog in the back. But now you can get that size from SRAM, and Shimano. But I think IRD's stuff works well overall. A lot of their products are good solutions to unique or hard to solve problems. Especially if your trying to set up a CX bike that is pieced together.
IRD 12-32 cassette for campy! What a great spread for a single ring setup! Raced it last year and this year have bought a second cassette for the spare wheel set! Fit is great especially given I use campy and it has issues normally with anything other than campy...Shifts fine with a med cage...Would recommend for any single ring set up...I use a 42x 12-32...Climb vertical and pound out on the flats!