Well, in the future that is. The maker of the Kryoflux is working hard on it atm. With enough donations, he can take days off to work full-time on it.
As the topic submitter states, he/she runs a computer museum. In that case he/she should really look closely at the development of the kryoflux, because software development of the catweasel is stalled AFAIK. Meanwhile, I personally use AmigaExplorer for all my Amiga backup/restore needs. But then again I do have workbench.
The latest software version v2.0 Beta 9 supports adf writing. This was just released in the last 1-2 weeks.